92990731 has 32 divisors (see below), whose sum is σ = 110315520. Its totient is φ = 77760000.

The previous prime is 92990683. The next prime is 92990749. The reversal of 92990731 is 13709929.

It is a 9-Lehmer number, since φ(92990731) divides (92990731-1)⁹.

It is a cyclic number.

It is not a de Polignac number, because 92990731 - 2¹¹ = 92988683 is a prime.

It is a super-2 number, since 2×92990731² = 17294552103828722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (92990231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370356 + ... + 370606.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^92990731 is an apocalyptic number.

92990731 is a deficient number, since it is larger than the sum of its proper divisors (17324789).

92990731 is a wasteful number, since it uses less digits than its factorization.

92990731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 92990731 is about 9643.1701737551. The cubic root of 92990731 is about 453.0504372659.

The spelling of 92990731 in words is "ninety-two million, nine hundred ninety thousand, seven hundred thirty-one".