39697138 has 8 divisors (see below), whose sum is σ = 64126188. Its totient is φ = 18321744.

The previous prime is 39697129. The next prime is 39697169. The reversal of 39697138 is 83179693.

It can be written as a sum of positive squares in 2 ways, for example, as 39225169 + 471969 = 6263^2 + 687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 763381 + ... + 763432.

Almost surely, 2^39697138 is an apocalyptic number.

39697138 is a deficient number, since it is larger than the sum of its proper divisors (24429050).

39697138 is a wasteful number, since it uses less digits than its factorization.

39697138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526828.

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

The square root of 39697138 is about 6300.5664824681. The cubic root of 39697138 is about 341.1298571194.

The spelling of 39697138 in words is "thirty-nine million, six hundred ninety-seven thousand, one hundred thirty-eight".