139939310 has 32 divisors (see below), whose sum is σ = 289828800. Its totient is φ = 47653632.

The previous prime is 139939279. The next prime is 139939339. The reversal of 139939310 is 13939931.

It is a super-2 number, since 2×139939310² = 39166020966552200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3722 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (9057150).

Almost surely, 2^139939310 is an apocalyptic number.

139939310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139939310 is an abundant number, since it is smaller than the sum of its proper divisors (149889490).

139939310 is a wasteful number, since it uses less digits than its factorization.

139939310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580.

The product of its (nonzero) digits is 19683, while the sum is 38.

The square root of 139939310 is about 11829.5946676122. The cubic root of 139939310 is about 519.1743678007.

The spelling of 139939310 in words is "one hundred thirty-nine million, nine hundred thirty-nine thousand, three hundred ten".