139912900 has 18 divisors (see below), whose sum is σ = 303611210. Its totient is φ = 55965120.

The previous prime is 139912891. The next prime is 139912901. The reversal of 139912900 is 9219931.

It can be written as a sum of positive squares in 3 ways, for example, as 21233664 + 118679236 = 4608^2 + 10894^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139912901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 699465 + ... + 699664.

Almost surely, 2^139912900 is an apocalyptic number.

139912900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139912900 is an abundant number, since it is smaller than the sum of its proper divisors (163698310).

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

139912900 is a wasteful number, since it uses less digits than its factorization.

139912900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399143 (or 1399136 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 139912900 is about 11828.4783467697. The cubic root of 139912900 is about 519.1417054089.

The spelling of 139912900 in words is "one hundred thirty-nine million, nine hundred twelve thousand, nine hundred".