139969932 has 24 divisors (see below), whose sum is σ = 326886000. Its totient is φ = 46615296.

The previous prime is 139969931. The next prime is 139969939. The reversal of 139969932 is 239969931.

It is a happy number.

139969932 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139969931) 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 7 ways as a sum of consecutive naturals, for example, 10944 + ... + 19992.

It is an arithmetic number, because the mean of its divisors is an integer number (13620250).

Almost surely, 2^139969932 is an apocalyptic number.

139969932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139969932 is an abundant number, since it is smaller than the sum of its proper divisors (186916068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139969932 is a wasteful number, since it uses less digits than its factorization.

139969932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345 (or 10343 counting only the distinct ones).

The product of its digits is 708588, while the sum is 51.

The square root of 139969932 is about 11830.8888930629. Note that the first 4 decimals coincide. The cubic root of 139969932 is about 519.2122342110.

Subtracting 139969932 from its reverse (239969931), we obtain a palindrome (99999999).

The spelling of 139969932 in words is "one hundred thirty-nine million, nine hundred sixty-nine thousand, nine hundred thirty-two".