139973364 has 18 divisors (see below), whose sum is σ = 353821650. Its totient is φ = 46657776.

The previous prime is 139973357. The next prime is 139973389. The reversal of 139973364 is 463379931.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88736400 + 51236964 = 9420^2 + 7158^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1944039 + ... + 1944110.

Almost surely, 2^139973364 is an apocalyptic number.

It is an amenable number.

139973364 is an abundant number, since it is smaller than the sum of its proper divisors (213848286).

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

139973364 is a wasteful number, since it uses less digits than its factorization.

139973364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888159 (or 3888154 counting only the distinct ones).

The product of its digits is 367416, while the sum is 45.

The square root of 139973364 is about 11831.0339362205. The cubic root of 139973364 is about 519.2164777934.

The spelling of 139973364 in words is "one hundred thirty-nine million, nine hundred seventy-three thousand, three hundred sixty-four".