139500900 has 432 divisors, whose sum is σ = 572602240. Its totient is φ = 28512000.

The previous prime is 139500887. The next prime is 139500913. The reversal of 139500900 is 9005931.

It is an interprime number because it is at equal distance from previous prime (139500887) and next prime (139500913).

It is a super-2 number, since 2×139500900² = 38921002201620000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2286870 + ... + 2286930.

Almost surely, 2^139500900 is an apocalyptic number.

139500900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139500900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286301120).

139500900 is an abundant number, since it is smaller than the sum of its proper divisors (433101340).

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

139500900 is a wasteful number, since it uses less digits than its factorization.

139500900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 139500900 is about 11811.0499109944. The cubic root of 139500900 is about 518.6316340961.

The spelling of 139500900 in words is "one hundred thirty-nine million, five hundred thousand, nine hundred".