479259139 has 4 divisors (see below), whose sum is σ = 480260160. Its totient is φ = 478258120.

The previous prime is 479259091. The next prime is 479259161. The reversal of 479259139 is 931952974.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 479259139 - 2⁹ = 479258627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 479259092 and 479259101.

It is not an unprimeable number, because it can be changed into a prime (479259199) 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, 499792 + ... + 500749.

It is an arithmetic number, because the mean of its divisors is an integer number (120065040).

Almost surely, 2^479259139 is an apocalyptic number.

479259139 is a deficient number, since it is larger than the sum of its proper divisors (1001021).

479259139 is a wasteful number, since it uses less digits than its factorization.

479259139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001020.

The product of its digits is 612360, while the sum is 49.

The square root of 479259139 is about 21891.9880093152. The cubic root of 479259139 is about 782.5704912560.

The spelling of 479259139 in words is "four hundred seventy-nine million, two hundred fifty-nine thousand, one hundred thirty-nine".