90779000 has 64 divisors (see below), whose sum is σ = 228795840. Its totient is φ = 33513600.

The previous prime is 90778991. The next prime is 90779027. The reversal of 90779000 is 97709.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9509 + ... + 16491.

It is an arithmetic number, because the mean of its divisors is an integer number (3574935).

Almost surely, 2^90779000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90779000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114397920).

90779000 is an abundant number, since it is smaller than the sum of its proper divisors (138016840).

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

90779000 is a wasteful number, since it uses less digits than its factorization.

90779000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017 (or 7003 counting only the distinct ones).

The product of its (nonzero) digits is 3969, while the sum is 32.

The square root of 90779000 is about 9527.8014253027. The cubic root of 90779000 is about 449.4297302968.

The spelling of 90779000 in words is "ninety million, seven hundred seventy-nine thousand".