139899536 has 80 divisors (see below), whose sum is σ = 319765248. Its totient is φ = 58060800.

The previous prime is 139899521. The next prime is 139899569. The reversal of 139899536 is 635998931.

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 15 ways as a sum of consecutive naturals, for example, 580376 + ... + 580616.

Almost surely, 2^139899536 is an apocalyptic number.

139899536 is a gapful number since it is divisible by the number (16) 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 139899536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159882624).

139899536 is an abundant number, since it is smaller than the sum of its proper divisors (179865712).

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

139899536 is a wasteful number, since it uses less digits than its factorization.

139899536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 394 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 53.

The square root of 139899536 is about 11827.9134254525. The cubic root of 139899536 is about 519.1251760046.

The spelling of 139899536 in words is "one hundred thirty-nine million, eight hundred ninety-nine thousand, five hundred thirty-six".