39668718 has 24 divisors (see below), whose sum is σ = 84282552. Its totient is φ = 12444544.

The previous prime is 39668687. The next prime is 39668729. The reversal of 39668718 is 81786693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9705 + ... + 13172.

It is an arithmetic number, because the mean of its divisors is an integer number (3511773).

Almost surely, 2^39668718 is an apocalyptic number.

39668718 is an abundant number, since it is smaller than the sum of its proper divisors (44613834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39668718 is a wasteful number, since it uses less digits than its factorization.

39668718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22916 (or 22899 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 39668718 is about 6298.3107259010. The cubic root of 39668718 is about 341.0484303840.

The spelling of 39668718 in words is "thirty-nine million, six hundred sixty-eight thousand, seven hundred eighteen".