90912355 has 4 divisors (see below), whose sum is σ = 109094832. Its totient is φ = 72729880.

The previous prime is 90912347. The next prime is 90912391. The reversal of 90912355 is 55321909.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90912355 - 2³ = 90912347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90912355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9091231 + ... + 9091240.

It is an arithmetic number, because the mean of its divisors is an integer number (27273708).

Almost surely, 2^90912355 is an apocalyptic number.

90912355 is a deficient number, since it is larger than the sum of its proper divisors (18182477).

90912355 is a wasteful number, since it uses less digits than its factorization.

90912355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18182476.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 90912355 is about 9534.7970612908. The cubic root of 90912355 is about 449.6496944512.

The spelling of 90912355 in words is "ninety million, nine hundred twelve thousand, three hundred fifty-five".