139869910 has 16 divisors (see below), whose sum is σ = 252565776. Its totient is φ = 55770208.

The previous prime is 139869907. The next prime is 139869911. The reversal of 139869910 is 19968931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139869911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18892 + ... + 25231.

It is an arithmetic number, because the mean of its divisors is an integer number (15785361).

Almost surely, 2^139869910 is an apocalyptic number.

139869910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139869910 is a deficient number, since it is larger than the sum of its proper divisors (112695866).

139869910 is a wasteful number, since it uses less digits than its factorization.

139869910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44447.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 139869910 is about 11826.6609827119. The cubic root of 139869910 is about 519.0885290205.

The spelling of 139869910 in words is "one hundred thirty-nine million, eight hundred sixty-nine thousand, nine hundred ten".