139899312 has 150 divisors (see below), whose sum is σ = 471230628. Its totient is φ = 39953088.

The previous prime is 139899293. The next prime is 139899329. The reversal of 139899312 is 213998931.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 62403 + ... + 64605.

Almost surely, 2^139899312 is an apocalyptic number.

139899312 is a gapful number since it is divisible by the number (12) 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 139899312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235615314).

139899312 is an abundant number, since it is smaller than the sum of its proper divisors (331331316).

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

139899312 is a wasteful number, since it uses less digits than its factorization.

139899312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2215 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 139899312 is about 11827.9039563229. The cubic root of 139899312 is about 519.1248989389.

The spelling of 139899312 in words is "one hundred thirty-nine million, eight hundred ninety-nine thousand, three hundred twelve".