39923712 has 156 divisors (see below), whose sum is σ = 124830840. Its totient is φ = 12607488.

The previous prime is 39923711. The next prime is 39923761. The reversal of 39923712 is 21732993.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (39923711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2101239 + ... + 2101257.

Almost surely, 2^39923712 is an apocalyptic number.

39923712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39923712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62415420).

39923712 is an abundant number, since it is smaller than the sum of its proper divisors (84907128).

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

39923712 is an equidigital number, since it uses as much as digits as its factorization.

39923712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 24 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 39923712 is about 6318.5213460113. The cubic root of 39923712 is about 341.7776332273. Note that the first 3 decimals are identical.

The spelling of 39923712 in words is "thirty-nine million, nine hundred twenty-three thousand, seven hundred twelve".