139869992 has 16 divisors (see below), whose sum is σ = 273659040. Its totient is φ = 66894256.

The previous prime is 139869991. The next prime is 139870009. The reversal of 139869992 is 299968931.

It is a super-2 number, since 2×139869992² = 39127229324160128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139869991) 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 3 ways as a sum of consecutive naturals, for example, 379898 + ... + 380265.

It is an arithmetic number, because the mean of its divisors is an integer number (17103690).

Almost surely, 2^139869992 is an apocalyptic number.

It is an amenable number.

139869992 is a deficient number, since it is larger than the sum of its proper divisors (133789048).

139869992 is a wasteful number, since it uses less digits than its factorization.

139869992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760192 (or 760188 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 56.

The square root of 139869992 is about 11826.6644494549. The cubic root of 139869992 is about 519.0886304606.

The spelling of 139869992 in words is "one hundred thirty-nine million, eight hundred sixty-nine thousand, nine hundred ninety-two".