479892509 has 4 divisors (see below), whose sum is σ = 479966304. Its totient is φ = 479818716.

The previous prime is 479892499. The next prime is 479892527. The reversal of 479892509 is 905298974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 479892509 - 2¹⁶ = 479826973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479894509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26087 + ... + 40500.

It is an arithmetic number, because the mean of its divisors is an integer number (119991576).

Almost surely, 2^479892509 is an apocalyptic number.

It is an amenable number.

479892509 is a deficient number, since it is larger than the sum of its proper divisors (73795).

479892509 is an equidigital number, since it uses as much as digits as its factorization.

479892509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73794.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 479892509 is about 21906.4490276265. The cubic root of 479892509 is about 782.9150776152.

The spelling of 479892509 in words is "four hundred seventy-nine million, eight hundred ninety-two thousand, five hundred nine".