39696887 has 4 divisors (see below), whose sum is σ = 42032016. Its totient is φ = 37361760.

The previous prime is 39696883. The next prime is 39696901. The reversal of 39696887 is 78869693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78869693 = 7 ⋅11267099.

It is a cyclic number.

It is not a de Polignac number, because 39696887 - 2² = 39696883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39696883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1167539 + ... + 1167572.

It is an arithmetic number, because the mean of its divisors is an integer number (10508004).

Almost surely, 2^39696887 is an apocalyptic number.

39696887 is a deficient number, since it is larger than the sum of its proper divisors (2335129).

39696887 is a wasteful number, since it uses less digits than its factorization.

39696887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335128.

The product of its digits is 3919104, while the sum is 56.

The square root of 39696887 is about 6300.5465635927. The cubic root of 39696887 is about 341.1291381442.

The spelling of 39696887 in words is "thirty-nine million, six hundred ninety-six thousand, eight hundred eighty-seven".