90790089 has 8 divisors (see below), whose sum is σ = 130365312. Its totient is φ = 55870800.

The previous prime is 90790087. The next prime is 90790099. The reversal of 90790089 is 98009709.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90790089 - 2¹ = 90790087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90790089.

It is not an unprimeable number, because it can be changed into a prime (90790087) 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, 1163937 + ... + 1164014.

It is an arithmetic number, because the mean of its divisors is an integer number (16295664).

Almost surely, 2^90790089 is an apocalyptic number.

It is an amenable number.

90790089 is a deficient number, since it is larger than the sum of its proper divisors (39575223).

90790089 is a wasteful number, since it uses less digits than its factorization.

90790089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327967.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 90790089 is about 9528.3833361174. The cubic root of 90790089 is about 449.4480294018.

The spelling of 90790089 in words is "ninety million, seven hundred ninety thousand, eighty-nine".