139555680 has 96 divisors (see below), whose sum is σ = 479582208. Its totient is φ = 33830400.

The previous prime is 139555679. The next prime is 139555681. The reversal of 139555680 is 86555931.

It is an interprime number because it is at equal distance from previous prime (139555679) and next prime (139555681).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139555681) by changing a digit.

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, 7936 + ... + 18495.

It is an arithmetic number, because the mean of its divisors is an integer number (4995648).

Almost surely, 2^139555680 is an apocalyptic number.

139555680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139555680 is an abundant number, since it is smaller than the sum of its proper divisors (340026528).

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

139555680 is a wasteful number, since it uses less digits than its factorization.

139555680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26460 (or 26452 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 139555680 is about 11813.3686982164. The cubic root of 139555680 is about 518.6995116102.

It can be divided in two parts, 1395 and 55680, that added together give a palindrome (57075).

The spelling of 139555680 in words is "one hundred thirty-nine million, five hundred fifty-five thousand, six hundred eighty".