139087936 has 28 divisors (see below), whose sum is σ = 297235372. Its totient is φ = 64194048.

The previous prime is 139087933. The next prime is 139087937. The reversal of 139087936 is 639780931.

It can be written as a sum of positive squares in 2 ways, for example, as 12390400 + 126697536 = 3520^2 + 11256^2 .

It is not an unprimeable number, because it can be changed into a prime (139087933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82755 + ... + 84418.

It is an arithmetic number, because the mean of its divisors is an integer number (10615549).

Almost surely, 2^139087936 is an apocalyptic number.

139087936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139087936 is an abundant number, since it is smaller than the sum of its proper divisors (158147436).

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

139087936 is a wasteful number, since it uses less digits than its factorization.

139087936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167198 (or 167188 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 139087936 is about 11793.5548500018. The cubic root of 139087936 is about 518.1193604977.

The spelling of 139087936 in words is "one hundred thirty-nine million, eighty-seven thousand, nine hundred thirty-six".