479916649 has 9 divisors (see below), whose sum is σ = 506944503. Its totient is φ = 454263552.

The previous prime is 479916641. The next prime is 479916653. The reversal of 479916649 is 946619974.

It is a happy number.

The square root of 479916649 is 21907.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 379275625 + 100641024 = 19475^2 + 10032^2 .

It is not a de Polignac number, because 479916649 - 2³ = 479916641 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 479916649.

It is not an unprimeable number, because it can be changed into a prime (479916641) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 415657 + ... + 416809.

It is an arithmetic number, because the mean of its divisors is an integer number (56327167).

Almost surely, 2^479916649 is an apocalyptic number.

479916649 is the 21907-th square number.

479916649 is the 10954-th centered octagonal number.

It is an amenable number.

479916649 is a deficient number, since it is larger than the sum of its proper divisors (27027854).

479916649 is an frugal number, since it uses more digits than its factorization.

479916649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 1172 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 55.

The cubic root of 479916649 is about 782.9282050363.

The spelling of 479916649 in words is "four hundred seventy-nine million, nine hundred sixteen thousand, six hundred forty-nine".