479072991 has 4 divisors (see below), whose sum is σ = 638763992. Its totient is φ = 319381992.

The previous prime is 479072983. The next prime is 479072999. The reversal of 479072991 is 199270974.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (479072983) and next prime (479072999).

It is not a de Polignac number, because 479072991 - 2³ = 479072983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 479072991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479072999) 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, 79845496 + ... + 79845501.

It is an arithmetic number, because the mean of its divisors is an integer number (159690998).

Almost surely, 2^479072991 is an apocalyptic number.

479072991 is a deficient number, since it is larger than the sum of its proper divisors (159691001).

479072991 is a wasteful number, since it uses less digits than its factorization.

479072991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159691000.

The product of its (nonzero) digits is 285768, while the sum is 48.

The square root of 479072991 is about 21887.7360866765. The cubic root of 479072991 is about 782.4691593013.

The spelling of 479072991 in words is "four hundred seventy-nine million, seventy-two thousand, nine hundred ninety-one".