39967138 has 4 divisors (see below), whose sum is σ = 59950710. Its totient is φ = 19983568.

The previous prime is 39967121. The next prime is 39967157. The reversal of 39967138 is 83176993.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 2181529 = 6147^2 + 1477^2 .

It is a super-2 number, since 2×39967138² = 3194744239822088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991783 + ... + 9991786.

Almost surely, 2^39967138 is an apocalyptic number.

39967138 is a deficient number, since it is larger than the sum of its proper divisors (19983572).

39967138 is a wasteful number, since it uses less digits than its factorization.

39967138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19983571.

The product of its digits is 244944, while the sum is 46.

The square root of 39967138 is about 6321.9568173153. The cubic root of 39967138 is about 341.9015082935.

The spelling of 39967138 in words is "thirty-nine million, nine hundred sixty-seven thousand, one hundred thirty-eight".