139870012 has 6 divisors (see below), whose sum is σ = 244772528. Its totient is φ = 69935004.

The previous prime is 139870009. The next prime is 139870019. The reversal of 139870012 is 210078931.

It is a super-4 number, since 4×139870012⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139870019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17483748 + ... + 17483755.

Almost surely, 2^139870012 is an apocalyptic number.

It is an amenable number.

139870012 is a deficient number, since it is larger than the sum of its proper divisors (104902516).

139870012 is a wasteful number, since it uses less digits than its factorization.

139870012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34967507 (or 34967505 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 139870012 is about 11826.6652950018. The cubic root of 139870012 is about 519.0886552021.

The spelling of 139870012 in words is "one hundred thirty-nine million, eight hundred seventy thousand, twelve".