139446992 has 20 divisors (see below), whose sum is σ = 270518400. Its totient is φ = 69635808.

The previous prime is 139446991. The next prime is 139446997. The reversal of 139446992 is 299644931.

139446992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139446991) 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, 8759 + ... + 18857.

It is an arithmetic number, because the mean of its divisors is an integer number (13525920).

Almost surely, 2^139446992 is an apocalyptic number.

It is an amenable number.

139446992 is a deficient number, since it is larger than the sum of its proper divisors (131071408).

139446992 is a wasteful number, since it uses less digits than its factorization.

139446992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10970 (or 10964 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 139446992 is about 11808.7675902272. The cubic root of 139446992 is about 518.5648197213.

The spelling of 139446992 in words is "one hundred thirty-nine million, four hundred forty-six thousand, nine hundred ninety-two".