39964994 has 16 divisors (see below), whose sum is σ = 64281600. Its totient is φ = 18567744.

The previous prime is 39964949. The next prime is 39964997. The reversal of 39964994 is 49946993.

It is not an unprimeable number, because it can be changed into a prime (39964997) 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, 4754 + ... + 10125.

It is an arithmetic number, because the mean of its divisors is an integer number (4017600).

Almost surely, 2^39964994 is an apocalyptic number.

39964994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

39964994 is a deficient number, since it is larger than the sum of its proper divisors (24316606).

39964994 is a wasteful number, since it uses less digits than its factorization.

39964994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14977.

The product of its digits is 1889568, while the sum is 53.

The square root of 39964994 is about 6321.7872472901. The cubic root of 39964994 is about 341.8953945212.

The spelling of 39964994 in words is "thirty-nine million, nine hundred sixty-four thousand, nine hundred ninety-four".