39868623 has 12 divisors (see below), whose sum is σ = 57736848. Its totient is φ = 26510400.

The previous prime is 39868613. The next prime is 39868657. The reversal of 39868623 is 32686893.

It is not a de Polignac number, because 39868623 - 2²¹ = 37771471 is a prime.

It is a super-2 number, since 2×39868623² = 3179014199832258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39868613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915 + ... + 9132.

It is an arithmetic number, because the mean of its divisors is an integer number (4811404).

Almost surely, 2^39868623 is an apocalyptic number.

39868623 is a deficient number, since it is larger than the sum of its proper divisors (17868225).

39868623 is a wasteful number, since it uses less digits than its factorization.

39868623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11454 (or 11451 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 39868623 is about 6314.1605142727. The cubic root of 39868623 is about 341.6203594852.

The spelling of 39868623 in words is "thirty-nine million, eight hundred sixty-eight thousand, six hundred twenty-three".