39139910 has 8 divisors (see below), whose sum is σ = 70451856. Its totient is φ = 15655960.

The previous prime is 39139907. The next prime is 39139921. The reversal of 39139910 is 1993193.

It is a happy number.

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

It is a congruent number.

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, 1956986 + ... + 1957005.

It is an arithmetic number, because the mean of its divisors is an integer number (8806482).

Almost surely, 2^39139910 is an apocalyptic number.

39139910 is a deficient number, since it is larger than the sum of its proper divisors (31311946).

39139910 is a wasteful number, since it uses less digits than its factorization.

39139910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913998.

The product of its (nonzero) digits is 6561, while the sum is 35.

The square root of 39139910 is about 6256.1897349745. The cubic root of 39139910 is about 339.5261854560.

The spelling of 39139910 in words is "thirty-nine million, one hundred thirty-nine thousand, nine hundred ten".