39456972 has 72 divisors (see below), whose sum is σ = 103783680. Its totient is φ = 12630240.

The previous prime is 39456961. The next prime is 39456979. The reversal of 39456972 is 27965493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (39456979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109729 + ... + 110087.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^39456972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39456972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51891840).

39456972 is an abundant number, since it is smaller than the sum of its proper divisors (64326708).

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

39456972 is a wasteful number, since it uses less digits than its factorization.

39456972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 478 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 39456972 is about 6281.4784883815. The cubic root of 39456972 is about 340.4405247152.

The spelling of 39456972 in words is "thirty-nine million, four hundred fifty-six thousand, nine hundred seventy-two".