90492457 has 8 divisors (see below), whose sum is σ = 99312192. Its totient is φ = 81771600.

The previous prime is 90492449. The next prime is 90492481. The reversal of 90492457 is 75429409.

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 90492457 - 2³ = 90492449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90492427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22794 + ... + 26467.

It is an arithmetic number, because the mean of its divisors is an integer number (12414024).

Almost surely, 2^90492457 is an apocalyptic number.

It is an amenable number.

90492457 is a deficient number, since it is larger than the sum of its proper divisors (8819735).

90492457 is a wasteful number, since it uses less digits than its factorization.

90492457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49439.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 90492457 is about 9512.7523356808. The cubic root of 90492457 is about 448.9563584086.

The spelling of 90492457 in words is "ninety million, four hundred ninety-two thousand, four hundred fifty-seven".