90779004 has 36 divisors (see below), whose sum is σ = 232619296. Its totient is φ = 29844288.

The previous prime is 90778991. The next prime is 90779027. The reversal of 90779004 is 40097709.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 90779004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14644 + ... + 19899.

Almost surely, 2^90779004 is an apocalyptic number.

It is an amenable number.

90779004 is an abundant number, since it is smaller than the sum of its proper divisors (141840292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90779004 is a wasteful number, since it uses less digits than its factorization.

90779004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34626 (or 34621 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 90779004 is about 9527.8016352147. The cubic root of 90779004 is about 449.4297368978.

It can be divided in two parts, 9077 and 9004, that added together give a palindrome (18081).

The spelling of 90779004 in words is "ninety million, seven hundred seventy-nine thousand, four".