420439976 has 16 divisors (see below), whose sum is σ = 859991040. Its totient is φ = 191109040.

The previous prime is 420439973. The next prime is 420439979. The reversal of 420439976 is 679934024.

It is an interprime number because it is at equal distance from previous prime (420439973) and next prime (420439979).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (420439973) 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, 2388776 + ... + 2388951.

It is an arithmetic number, because the mean of its divisors is an integer number (53749440).

Almost surely, 2^420439976 is an apocalyptic number.

It is an amenable number.

420439976 is an abundant number, since it is smaller than the sum of its proper divisors (439551064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420439976 is a wasteful number, since it uses less digits than its factorization.

420439976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4777744 (or 4777740 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 420439976 is about 20504.6330374381. The cubic root of 420439976 is about 749.1486493759.

The spelling of 420439976 in words is "four hundred twenty million, four hundred thirty-nine thousand, nine hundred seventy-six".