90980879 has 8 divisors (see below), whose sum is σ = 99724800. Its totient is φ = 82315800.

The previous prime is 90980863. The next prime is 90980909. The reversal of 90980879 is 97808909.

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 90980879 - 2⁴ = 90980863 is a prime.

It is a super-2 number, since 2×90980879² = 16555040687225282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90980839) 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, 17279 + ... + 21920.

It is an arithmetic number, because the mean of its divisors is an integer number (12465600).

Almost surely, 2^90980879 is an apocalyptic number.

90980879 is a deficient number, since it is larger than the sum of its proper divisors (8743921).

90980879 is a wasteful number, since it uses less digits than its factorization.

90980879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39421.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 90980879 is about 9538.3897487993. The cubic root of 90980879 is about 449.7626386071.

The spelling of 90980879 in words is "ninety million, nine hundred eighty thousand, eight hundred seventy-nine".