139353972 has 24 divisors (see below), whose sum is σ = 329740992. Its totient is φ = 45796800.

The previous prime is 139353971. The next prime is 139353997. The reversal of 139353972 is 279353931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139353971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80929 + ... + 82632.

It is an arithmetic number, because the mean of its divisors is an integer number (13739208).

Almost surely, 2^139353972 is an apocalyptic number.

139353972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139353972 is an abundant number, since it is smaller than the sum of its proper divisors (190387020).

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

139353972 is a wasteful number, since it uses less digits than its factorization.

139353972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163639 (or 163637 counting only the distinct ones).

The product of its digits is 153090, while the sum is 42.

The square root of 139353972 is about 11804.8283342029. The cubic root of 139353972 is about 518.4494888501.

The spelling of 139353972 in words is "one hundred thirty-nine million, three hundred fifty-three thousand, nine hundred seventy-two".