139809710 has 8 divisors (see below), whose sum is σ = 251657496. Its totient is φ = 55923880.

The previous prime is 139809701. The next prime is 139809757. The reversal of 139809710 is 17908931.

139809710 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 6990476 + ... + 6990495.

It is an arithmetic number, because the mean of its divisors is an integer number (31457187).

Almost surely, 2^139809710 is an apocalyptic number.

139809710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139809710 is a deficient number, since it is larger than the sum of its proper divisors (111847786).

139809710 is a wasteful number, since it uses less digits than its factorization.

139809710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13980978.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 139809710 is about 11824.1156117487. The cubic root of 139809710 is about 519.0140464442.

The spelling of 139809710 in words is "one hundred thirty-nine million, eight hundred nine thousand, seven hundred ten".