39976420 has 24 divisors (see below), whose sum is σ = 91582848. Its totient is φ = 14536800.

The previous prime is 39976393. The next prime is 39976427. The reversal of 39976420 is 2467993.

It is a super-2 number, since 2×39976420² = 3196228312032800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39976427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90636 + ... + 91075.

It is an arithmetic number, because the mean of its divisors is an integer number (3815952).

Almost surely, 2^39976420 is an apocalyptic number.

It is an amenable number.

39976420 is an abundant number, since it is smaller than the sum of its proper divisors (51606428).

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

39976420 is a wasteful number, since it uses less digits than its factorization.

39976420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181731 (or 181729 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 39976420 is about 6322.6908828441. The cubic root of 39976420 is about 341.9279740711.

The spelling of 39976420 in words is "thirty-nine million, nine hundred seventy-six thousand, four hundred twenty".