479464021 has 4 divisors (see below), whose sum is σ = 479732044. Its totient is φ = 479196000.

The previous prime is 479463983. The next prime is 479464057. The reversal of 479464021 is 120464974.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 285948100 + 193515921 = 16910^2 + 13911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479464021 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 (479464081) 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, 131310 + ... + 134911.

It is an arithmetic number, because the mean of its divisors is an integer number (119933011).

Almost surely, 2^479464021 is an apocalyptic number.

It is an amenable number.

479464021 is a deficient number, since it is larger than the sum of its proper divisors (268023).

479464021 is a wasteful number, since it uses less digits than its factorization.

479464021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268022.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 479464021 is about 21896.6668924748. Note that the first 3 decimals coincide. The cubic root of 479464021 is about 782.6819909662.

The spelling of 479464021 in words is "four hundred seventy-nine million, four hundred sixty-four thousand, twenty-one".