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89946931 = 1916572857
BaseRepresentation
bin1010101110001…
…11101100110011
320021020202222211
411113013230303
5141011300211
612531512551
72141351644
oct527075463
9207222884
1089946931
1146855508
1226158757
1315833a49
14bd356cb
157d6ae21
hex55c7b33

89946931 has 8 divisors (see below), whose sum is σ = 94771280. Its totient is φ = 85131648.

The previous prime is 89946919. The next prime is 89946943. The reversal of 89946931 is 13964998.

It is an interprime number because it is at equal distance from previous prime (89946919) and next prime (89946943).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89946931 - 27 = 89946803 is a prime.

It is a super-2 number, since 2×899469312 = 16180900792637522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89946971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30055 + ... + 32911.

It is an arithmetic number, because the mean of its divisors is an integer number (11846410).

Almost surely, 289946931 is an apocalyptic number.

89946931 is a deficient number, since it is larger than the sum of its proper divisors (4824349).

89946931 is a wasteful number, since it uses less digits than its factorization.

89946931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533.

The product of its digits is 419904, while the sum is 49.

The square root of 89946931 is about 9484.0355861838. The cubic root of 89946931 is about 448.0523744970.

The spelling of 89946931 in words is "eighty-nine million, nine hundred forty-six thousand, nine hundred thirty-one".

Divisors: 1 19 1657 2857 31483 54283 4734049 89946931