90869057279 has 32 divisors (see below), whose sum is σ = 125303517696. Its totient is φ = 63593838720.

The previous prime is 90869057269. The next prime is 90869057291. The reversal of 90869057279 is 97275096809.

It is a cyclic number.

It is not a de Polignac number, because 90869057279 - 2⁴ = 90869057263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90869057219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1189697 + ... + 1263770.

It is an arithmetic number, because the mean of its divisors is an integer number (3915734928).

Almost surely, 2^90869057279 is an apocalyptic number.

90869057279 is a deficient number, since it is larger than the sum of its proper divisors (34434460417).

90869057279 is a wasteful number, since it uses less digits than its factorization.

90869057279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453535.

The product of its (nonzero) digits is 17146080, while the sum is 62.

The spelling of 90869057279 in words is "ninety billion, eight hundred sixty-nine million, fifty-seven thousand, two hundred seventy-nine".