39967964 has 12 divisors (see below), whose sum is σ = 69988464. Its totient is φ = 19971264.

The previous prime is 39967937. The next prime is 39967973. The reversal of 39967964 is 46976993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9569 + ... + 13095.

It is an arithmetic number, because the mean of its divisors is an integer number (5832372).

Almost surely, 2^39967964 is an apocalyptic number.

It is an amenable number.

39967964 is a deficient number, since it is larger than the sum of its proper divisors (30020500).

39967964 is a wasteful number, since it uses less digits than its factorization.

39967964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6364 (or 6362 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 53.

The square root of 39967964 is about 6322.0221448521. The cubic root of 39967964 is about 341.9038636344.

The spelling of 39967964 in words is "thirty-nine million, nine hundred sixty-seven thousand, nine hundred sixty-four".