479297640 has 32 divisors (see below), whose sum is σ = 1437893280. Its totient is φ = 127812672.

The previous prime is 479297627. The next prime is 479297647. The reversal of 479297640 is 46792974.

It is a self number, because there is not a number n which added to its sum of digits gives 479297640.

It is not an unprimeable number, because it can be changed into a prime (479297647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1996954 + ... + 1997193.

It is an arithmetic number, because the mean of its divisors is an integer number (44934165).

Almost surely, 2^479297640 is an apocalyptic number.

479297640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

479297640 is an abundant number, since it is smaller than the sum of its proper divisors (958595640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

479297640 is a wasteful number, since it uses less digits than its factorization.

479297640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994161 (or 3994157 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The square root of 479297640 is about 21892.8673316220. The cubic root of 479297640 is about 782.5914464744.

The spelling of 479297640 in words is "four hundred seventy-nine million, two hundred ninety-seven thousand, six hundred forty".