139655488 has 42 divisors (see below), whose sum is σ = 322381626. Its totient is φ = 59851008.

The previous prime is 139655473. The next prime is 139655519. The reversal of 139655488 is 884556931.

It can be written as a sum of positive squares in only one way, i.e., 122943744 + 16711744 = 11088^2 + 4088^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 19131 + ... + 25402.

It is an arithmetic number, because the mean of its divisors is an integer number (7675753).

Almost surely, 2^139655488 is an apocalyptic number.

It is an amenable number.

139655488 is an abundant number, since it is smaller than the sum of its proper divisors (182726138).

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

139655488 is an equidigital number, since it uses as much as digits as its factorization.

139655488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44559 (or 44542 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 49.

The square root of 139655488 is about 11817.5923097727. The cubic root of 139655488 is about 518.8231373534.

The spelling of 139655488 in words is "one hundred thirty-nine million, six hundred fifty-five thousand, four hundred eighty-eight".