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89950745 = 517990149
BaseRepresentation
bin1010101110010…
…00101000011001
320021020222020002
411113020220121
5141011410440
612531542345
72141366033
oct527105031
9207228202
1089950745
1146858365
122615a9b5
13158356c1
14bd36c53
157d6c115
hex55c8a19

89950745 has 4 divisors (see below), whose sum is σ = 107940900. Its totient is φ = 71960592.

The previous prime is 89950741. The next prime is 89950759. The reversal of 89950745 is 54705998.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54705998 = 227352999.

It can be written as a sum of positive squares in 2 ways, for example, as 32993536 + 56957209 = 5744^2 + 7547^2 .

It is a cyclic number.

It is not a de Polignac number, because 89950745 - 22 = 89950741 is a prime.

It is a super-2 number, since 2×899507452 = 16182273052110050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 89950745.

It is not an unprimeable number, because it can be changed into a prime (89950741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8995070 + ... + 8995079.

It is an arithmetic number, because the mean of its divisors is an integer number (26985225).

Almost surely, 289950745 is an apocalyptic number.

It is an amenable number.

89950745 is a deficient number, since it is larger than the sum of its proper divisors (17990155).

89950745 is a wasteful number, since it uses less digits than its factorization.

89950745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17990154.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 89950745 is about 9484.2366587934. The cubic root of 89950745 is about 448.0587072964.

The spelling of 89950745 in words is "eighty-nine million, nine hundred fifty thousand, seven hundred forty-five".

Divisors: 1 5 17990149 89950745