139034900 has 72 divisors (see below), whose sum is σ = 316151640. Its totient is φ = 53015040.

The previous prime is 139034899. The next prime is 139034923. The reversal of 139034900 is 9430931.

It can be written as a sum of positive squares in 12 ways, for example, as 20921476 + 118113424 = 4574^2 + 10868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195746 + ... + 196454.

It is an arithmetic number, because the mean of its divisors is an integer number (4390995).

Almost surely, 2^139034900 is an apocalyptic number.

139034900 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 139034900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158075820).

139034900 is an abundant number, since it is smaller than the sum of its proper divisors (177116740).

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

139034900 is a wasteful number, since it uses less digits than its factorization.

139034900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 139034900 is about 11791.3061193406. The cubic root of 139034900 is about 518.0534969569.

The spelling of 139034900 in words is "one hundred thirty-nine million, thirty-four thousand, nine hundred".