479837021 has 2 divisors, whose sum is σ = 479837022. Its totient is φ = 479837020.

The previous prime is 479836997. The next prime is 479837069. The reversal of 479837021 is 120738974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466776025 + 13060996 = 21605^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 479837021 - 2²⁶ = 412728157 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 479837021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479837081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239918510 + 239918511.

It is an arithmetic number, because the mean of its divisors is an integer number (239918511).

Almost surely, 2^479837021 is an apocalyptic number.

It is an amenable number.

479837021 is a deficient number, since it is larger than the sum of its proper divisors (1).

479837021 is an equidigital number, since it uses as much as digits as its factorization.

479837021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 479837021 is about 21905.1825146471. The cubic root of 479837021 is about 782.8849013671.

The spelling of 479837021 in words is "four hundred seventy-nine million, eight hundred thirty-seven thousand, twenty-one".