90574391 has 8 divisors (see below), whose sum is σ = 95038944. Its totient is φ = 86153760.

The previous prime is 90574339. The next prime is 90574397. The reversal of 90574391 is 19347509.

It is a happy number.

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 90574391 - 2¹⁰ = 90573367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90574397) 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, 6716 + ... + 15041.

It is an arithmetic number, because the mean of its divisors is an integer number (11879868).

Almost surely, 2^90574391 is an apocalyptic number.

90574391 is a deficient number, since it is larger than the sum of its proper divisors (4464553).

90574391 is a wasteful number, since it uses less digits than its factorization.

90574391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 90574391 is about 9517.0578962198. The cubic root of 90574391 is about 449.0918160852.

The spelling of 90574391 in words is "ninety million, five hundred seventy-four thousand, three hundred ninety-one".