479008421 has 4 divisors (see below), whose sum is σ = 479108844. Its totient is φ = 478908000.

The previous prime is 479008381. The next prime is 479008427. The reversal of 479008421 is 124800974.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124800974 = 2 ⋅62400487.

It can be written as a sum of positive squares in 2 ways, for example, as 243048100 + 235960321 = 15590^2 + 15361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-479008421 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 (479008427) 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, 42680 + ... + 52721.

It is an arithmetic number, because the mean of its divisors is an integer number (119777211).

Almost surely, 2^479008421 is an apocalyptic number.

It is an amenable number.

479008421 is a deficient number, since it is larger than the sum of its proper divisors (100423).

479008421 is an equidigital number, since it uses as much as digits as its factorization.

479008421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100422.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 479008421 is about 21886.2610100492. The cubic root of 479008421 is about 782.4340036954.

The spelling of 479008421 in words is "four hundred seventy-nine million, eight thousand, four hundred twenty-one".