39964868 has 24 divisors (see below), whose sum is σ = 71092224. Its totient is φ = 19656000.

The previous prime is 39964867. The next prime is 39964879. The reversal of 39964868 is 86846993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39964867) 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, 76448 + ... + 76968.

It is an arithmetic number, because the mean of its divisors is an integer number (2962176).

Almost surely, 2^39964868 is an apocalyptic number.

It is an amenable number.

39964868 is a deficient number, since it is larger than the sum of its proper divisors (31127356).

39964868 is a wasteful number, since it uses less digits than its factorization.

39964868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 801 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 39964868 is about 6321.7772817460. Note that the first 3 decimals coincide. The cubic root of 39964868 is about 341.8950352162.

The spelling of 39964868 in words is "thirty-nine million, nine hundred sixty-four thousand, eight hundred sixty-eight".