90609179 has 2 divisors, whose sum is σ = 90609180. Its totient is φ = 90609178.

The previous prime is 90609151. The next prime is 90609223. The reversal of 90609179 is 97190609.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90609179 - 2¹⁶ = 90543643 is a prime.

It is not a weakly prime, because it can be changed into another prime (90609479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45304589 + 45304590.

It is an arithmetic number, because the mean of its divisors is an integer number (45304590).

Almost surely, 2^90609179 is an apocalyptic number.

90609179 is a deficient number, since it is larger than the sum of its proper divisors (1).

90609179 is an equidigital number, since it uses as much as digits as its factorization.

90609179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 90609179 is about 9518.8853864305. The cubic root of 90609179 is about 449.1493047645.

The spelling of 90609179 in words is "ninety million, six hundred nine thousand, one hundred seventy-nine".