139944670 has 16 divisors (see below), whose sum is σ = 252052848. Its totient is φ = 55944000.

The previous prime is 139944647. The next prime is 139944683. The reversal of 139944670 is 76449931.

It is a super-2 number, since 2×139944670² = 39169021322817800, 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 7 ways as a sum of consecutive naturals, for example, 19402 + ... + 25618.

It is an arithmetic number, because the mean of its divisors is an integer number (15753303).

Almost surely, 2^139944670 is an apocalyptic number.

139944670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139944670 is a deficient number, since it is larger than the sum of its proper divisors (112108178).

139944670 is a wasteful number, since it uses less digits than its factorization.

139944670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 139944670 is about 11829.8212158933. The cubic root of 139944670 is about 519.1809962433.

The spelling of 139944670 in words is "one hundred thirty-nine million, nine hundred forty-four thousand, six hundred seventy".