139896680 has 128 divisors (see below), whose sum is σ = 400308480. Its totient is φ = 42731520.

The previous prime is 139896661. The next prime is 139896683. The reversal of 139896680 is 86698931.

It is not an unprimeable number, because it can be changed into a prime (139896683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162812 + ... + 163668.

It is an arithmetic number, because the mean of its divisors is an integer number (3127410).

Almost surely, 2^139896680 is an apocalyptic number.

139896680 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 139896680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200154240).

139896680 is an abundant number, since it is smaller than the sum of its proper divisors (260411800).

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

139896680 is a wasteful number, since it uses less digits than its factorization.

139896680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 139896680 is about 11827.7926934826. The cubic root of 139896680 is about 519.1216433944.

The spelling of 139896680 in words is "one hundred thirty-nine million, eight hundred ninety-six thousand, six hundred eighty".