139399732 has 12 divisors (see below), whose sum is σ = 256789120. Its totient is φ = 66031416.

The previous prime is 139399717. The next prime is 139399747. The reversal of 139399732 is 237993931.

It is an interprime number because it is at equal distance from previous prime (139399717) and next prime (139399747).

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 3 ways as a sum of consecutive naturals, for example, 917028 + ... + 917179.

Almost surely, 2^139399732 is an apocalyptic number.

It is an amenable number.

139399732 is a deficient number, since it is larger than the sum of its proper divisors (117389388).

139399732 is a wasteful number, since it uses less digits than its factorization.

139399732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834230 (or 1834228 counting only the distinct ones).

The product of its digits is 275562, while the sum is 46.

The square root of 139399732 is about 11806.7663650976. The cubic root of 139399732 is about 518.5062308096.

The spelling of 139399732 in words is "one hundred thirty-nine million, three hundred ninety-nine thousand, seven hundred thirty-two".