139989508 has 6 divisors (see below), whose sum is σ = 244981646. Its totient is φ = 69994752.

The previous prime is 139989503. The next prime is 139989559. The reversal of 139989508 is 805989931.

It can be written as a sum of positive squares in only one way, i.e., 130142464 + 9847044 = 11408^2 + 3138^2 .

It is not an unprimeable number, because it can be changed into a prime (139989503) 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 as a sum of consecutive naturals, namely, 17498685 + ... + 17498692.

Almost surely, 2^139989508 is an apocalyptic number.

It is an amenable number.

139989508 is a deficient number, since it is larger than the sum of its proper divisors (104992138).

139989508 is a wasteful number, since it uses less digits than its factorization.

139989508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34997381 (or 34997379 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 52.

The square root of 139989508 is about 11831.7161899701. The cubic root of 139989508 is about 519.2364385163.

The spelling of 139989508 in words is "one hundred thirty-nine million, nine hundred eighty-nine thousand, five hundred eight".