90979507 has 2 divisors, whose sum is σ = 90979508. Its totient is φ = 90979506.

The previous prime is 90979453. The next prime is 90979519. The reversal of 90979507 is 70597909.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90979507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90979547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45489753 + 45489754.

It is an arithmetic number, because the mean of its divisors is an integer number (45489754).

Almost surely, 2^90979507 is an apocalyptic number.

90979507 is a deficient number, since it is larger than the sum of its proper divisors (1).

90979507 is an equidigital number, since it uses as much as digits as its factorization.

90979507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 178605, while the sum is 46.

The square root of 90979507 is about 9538.3178286320. The cubic root of 90979507 is about 449.7603777751.

The spelling of 90979507 in words is "ninety million, nine hundred seventy-nine thousand, five hundred seven".