90590579 has 2 divisors, whose sum is σ = 90590580. Its totient is φ = 90590578.

The previous prime is 90590567. The next prime is 90590581. The reversal of 90590579 is 97509509.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90590579 is a prime.

Together with 90590581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90590509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45295289 + 45295290.

It is an arithmetic number, because the mean of its divisors is an integer number (45295290).

Almost surely, 2^90590579 is an apocalyptic number.

90590579 is a deficient number, since it is larger than the sum of its proper divisors (1).

90590579 is an equidigital number, since it uses as much as digits as its factorization.

90590579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127575, while the sum is 44.

The square root of 90590579 is about 9517.9083311408. The cubic root of 90590579 is about 449.1185692883.

The spelling of 90590579 in words is "ninety million, five hundred ninety thousand, five hundred seventy-nine".