39979693 has 8 divisors (see below), whose sum is σ = 43211168. Its totient is φ = 36770544.

The previous prime is 39979679. The next prime is 39979703. The reversal of 39979693 is 39697993.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39979693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39979613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755 + ... + 9112.

It is an arithmetic number, because the mean of its divisors is an integer number (5401396).

Almost surely, 2^39979693 is an apocalyptic number.

It is an amenable number.

39979693 is a deficient number, since it is larger than the sum of its proper divisors (3231475).

39979693 is a wasteful number, since it uses less digits than its factorization.

39979693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11163.

The product of its digits is 2480058, while the sum is 55.

The square root of 39979693 is about 6322.9497072174. The cubic root of 39979693 is about 341.9373054029.

The spelling of 39979693 in words is "thirty-nine million, nine hundred seventy-nine thousand, six hundred ninety-three".