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90012383 = 797112939
BaseRepresentation
bin1010101110101…
…11101011011111
320021101002202222
411113113223133
5141020344013
612533135555
72142043526
oct527275337
9207332688
1090012383
114689a6aa
122618a5bb
1315857786
14bd514bd
157d80508
hex55d7adf

90012383 has 4 divisors (see below), whose sum is σ = 90126120. Its totient is φ = 89898648.

The previous prime is 90012361. The next prime is 90012397. The reversal of 90012383 is 38321009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38321009 = 172254177.

It is a cyclic number.

It is not a de Polignac number, because 90012383 - 26 = 90012319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90012323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55673 + ... + 57266.

It is an arithmetic number, because the mean of its divisors is an integer number (22531530).

Almost surely, 290012383 is an apocalyptic number.

90012383 is a deficient number, since it is larger than the sum of its proper divisors (113737).

90012383 is a wasteful number, since it uses less digits than its factorization.

90012383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113736.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90012383 is about 9487.4855994621. The cubic root of 90012383 is about 448.1610267632.

The spelling of 90012383 in words is "ninety million, twelve thousand, three hundred eighty-three".

Divisors: 1 797 112939 90012383