139730910 has 32 divisors (see below), whose sum is σ = 365841792. Its totient is φ = 33874080.

The previous prime is 139730897. The next prime is 139730923. The reversal of 139730910 is 19037931.

It is an interprime number because it is at equal distance from previous prime (139730897) and next prime (139730923).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 211384 + ... + 212043.

It is an arithmetic number, because the mean of its divisors is an integer number (11432556).

Almost surely, 2^139730910 is an apocalyptic number.

139730910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139730910 is an abundant number, since it is smaller than the sum of its proper divisors (226110882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139730910 is a wasteful number, since it uses less digits than its factorization.

139730910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423448.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 139730910 is about 11820.7829689915. The cubic root of 139730910 is about 518.9165186616.

The spelling of 139730910 in words is "one hundred thirty-nine million, seven hundred thirty thousand, nine hundred ten".