139998752 has 12 divisors (see below), whose sum is σ = 275622606. Its totient is φ = 69999360.

The previous prime is 139998709. The next prime is 139998763. The reversal of 139998752 is 257899931.

It can be written as a sum of positive squares in only one way, i.e., 102495376 + 37503376 = 10124^2 + 6124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139998694 and 139998703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2187449 + ... + 2187512.

Almost surely, 2^139998752 is an apocalyptic number.

It is an amenable number.

139998752 is a deficient number, since it is larger than the sum of its proper divisors (135623854).

139998752 is an equidigital number, since it uses as much as digits as its factorization.

139998752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374971 (or 4374963 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 139998752 is about 11832.1068284562. The cubic root of 139998752 is about 519.2478672680.

The spelling of 139998752 in words is "one hundred thirty-nine million, nine hundred ninety-eight thousand, seven hundred fifty-two".