139222932 has 12 divisors (see below), whose sum is σ = 324853536. Its totient is φ = 46407640.

The previous prime is 139222931. The next prime is 139222957. The reversal of 139222932 is 239222931.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 139222893 and 139222902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139222931) 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, 5800944 + ... + 5800967.

It is an arithmetic number, because the mean of its divisors is an integer number (27071128).

Almost surely, 2^139222932 is an apocalyptic number.

139222932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139222932 is an abundant number, since it is smaller than the sum of its proper divisors (185630604).

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

139222932 is a wasteful number, since it uses less digits than its factorization.

139222932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11601918 (or 11601916 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 139222932 is about 11799.2767574966. The cubic root of 139222932 is about 518.2869317639.

Subtracting 139222932 from its reverse (239222931), we obtain a palindrome (99999999).

The spelling of 139222932 in words is "one hundred thirty-nine million, two hundred twenty-two thousand, nine hundred thirty-two".