90888391 has 8 divisors (see below), whose sum is σ = 101831184. Its totient is φ = 80392320.

The previous prime is 90888383. The next prime is 90888397. The reversal of 90888391 is 19388809.

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 90888391 - 2³ = 90888383 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 (90888397) 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, 111250 + ... + 112063.

It is an arithmetic number, because the mean of its divisors is an integer number (12728898).

Almost surely, 2^90888391 is an apocalyptic number.

90888391 is a deficient number, since it is larger than the sum of its proper divisors (10942793).

90888391 is a wasteful number, since it uses less digits than its factorization.

90888391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223361.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 90888391 is about 9533.5403182658. The cubic root of 90888391 is about 449.6101825785.

The spelling of 90888391 in words is "ninety million, eight hundred eighty-eight thousand, three hundred ninety-one".