90216279 has 12 divisors (see below), whose sum is σ = 133343496. Its totient is φ = 58745232.

The previous prime is 90216271. The next prime is 90216283. The reversal of 90216279 is 97261209.

90216279 is a `hidden beast` number, since 9 + 0 + 21 + 627 + 9 = 666.

It is not a de Polignac number, because 90216279 - 2³ = 90216271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90216271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116172 + ... + 116945.

It is an arithmetic number, because the mean of its divisors is an integer number (11111958).

Almost surely, 2^90216279 is an apocalyptic number.

90216279 is a deficient number, since it is larger than the sum of its proper divisors (43127217).

90216279 is a wasteful number, since it uses less digits than its factorization.

90216279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233166 (or 233163 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90216279 is about 9498.2250447123. The cubic root of 90216279 is about 448.4991629459.

The spelling of 90216279 in words is "ninety million, two hundred sixteen thousand, two hundred seventy-nine".