479969281 has 4 divisors (see below), whose sum is σ = 523602864. Its totient is φ = 436335700.

The previous prime is 479969261. The next prime is 479969293. The reversal of 479969281 is 182969974.

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 479969281 - 2⁷ = 479969153 is a prime.

It is a super-2 number, since 2×479969281² = 460741021407313922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479969201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21816775 + ... + 21816796.

It is an arithmetic number, because the mean of its divisors is an integer number (130900716).

Almost surely, 2^479969281 is an apocalyptic number.

It is an amenable number.

479969281 is a deficient number, since it is larger than the sum of its proper divisors (43633583).

479969281 is a wasteful number, since it uses less digits than its factorization.

479969281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43633582.

The product of its digits is 1959552, while the sum is 55.

The square root of 479969281 is about 21908.2012269378. The cubic root of 479969281 is about 782.9568249859.

The spelling of 479969281 in words is "four hundred seventy-nine million, nine hundred sixty-nine thousand, two hundred eighty-one".