90979 has 8 divisors (see below), whose sum is σ = 106848. Its totient is φ = 75840.

The previous prime is 90977. The next prime is 90989. The reversal of 90979 is 97909.

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 90979 - 2¹ = 90977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90971) 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, 129 + ... + 445.

It is an arithmetic number, because the mean of its divisors is an integer number (13356).

2⁹⁰⁹⁷⁹ is an apocalyptic number.

90979 is a deficient number, since it is larger than the sum of its proper divisors (15869).

90979 is a wasteful number, since it uses less digits than its factorization.

90979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 90979 is about 301.6272534106. The cubic root of 90979 is about 44.9759542316.

The spelling of 90979 in words is "ninety thousand, nine hundred seventy-nine".