479923021 has 4 divisors (see below), whose sum is σ = 480359232. Its totient is φ = 479486812.

The previous prime is 479922973. The next prime is 479923027. The reversal of 479923021 is 120329974.

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 479923021 - 2¹³ = 479914829 is a prime.

It is a super-2 number, since 2×479923021² = 460652212171532882, 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 (479923027) 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, 216451 + ... + 218656.

It is an arithmetic number, because the mean of its divisors is an integer number (120089808).

Almost surely, 2^479923021 is an apocalyptic number.

It is an amenable number.

479923021 is a deficient number, since it is larger than the sum of its proper divisors (436211).

479923021 is a wasteful number, since it uses less digits than its factorization.

479923021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436210.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 479923021 is about 21907.1454324839. The cubic root of 479923021 is about 782.9316700799.

The spelling of 479923021 in words is "four hundred seventy-nine million, nine hundred twenty-three thousand, twenty-one".