39291968 has 28 divisors (see below), whose sum is σ = 79077312. Its totient is φ = 19367040.

The previous prime is 39291961. The next prime is 39291983. The reversal of 39291968 is 86919293.

It is not an unprimeable number, because it can be changed into a prime (39291961) 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, 221 + ... + 8867.

Almost surely, 2^39291968 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 39291968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39538656).

39291968 is an abundant number, since it is smaller than the sum of its proper divisors (39785344).

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

39291968 is an equidigital number, since it uses as much as digits as its factorization.

39291968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8730 (or 8720 counting only the distinct ones).

The product of its digits is 209952, while the sum is 47.

The square root of 39291968 is about 6268.3305592478. The cubic root of 39291968 is about 339.9653021108.

The spelling of 39291968 in words is "thirty-nine million, two hundred ninety-one thousand, nine hundred sixty-eight".