479397421 has 4 divisors (see below), whose sum is σ = 480510144. Its totient is φ = 478284700.

The previous prime is 479397407. The next prime is 479397439. The reversal of 479397421 is 124793974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 479397421 - 2¹¹ = 479395373 is a prime.

It is a super-2 number, since 2×479397421² = 459643774522902482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479397491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555715 + ... + 556576.

It is an arithmetic number, because the mean of its divisors is an integer number (120127536).

Almost surely, 2^479397421 is an apocalyptic number.

It is an amenable number.

479397421 is a deficient number, since it is larger than the sum of its proper divisors (1112723).

479397421 is a wasteful number, since it uses less digits than its factorization.

479397421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112722.

The product of its digits is 381024, while the sum is 46.

The square root of 479397421 is about 21895.1460602573. The cubic root of 479397421 is about 782.6457497801.

The spelling of 479397421 in words is "four hundred seventy-nine million, three hundred ninety-seven thousand, four hundred twenty-one".