479509501 has 2 divisors, whose sum is σ = 479509502. Its totient is φ = 479509500.

The previous prime is 479509493. The next prime is 479509523. The reversal of 479509501 is 105905974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 329422500 + 150087001 = 18150^2 + 12251^2 .

It is a cyclic number.

It is not a de Polignac number, because 479509501 - 2³ = 479509493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479509601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239754750 + 239754751.

It is an arithmetic number, because the mean of its divisors is an integer number (239754751).

Almost surely, 2^479509501 is an apocalyptic number.

It is an amenable number.

479509501 is a deficient number, since it is larger than the sum of its proper divisors (1).

479509501 is an equidigital number, since it uses as much as digits as its factorization.

479509501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 479509501 is about 21897.7053820714. The cubic root of 479509501 is about 782.7067375234.

Adding to 479509501 its product of nonzero digits (56700), we get a square (479566201 = 21899²).

The spelling of 479509501 in words is "four hundred seventy-nine million, five hundred nine thousand, five hundred one".