139009672 has 16 divisors (see below), whose sum is σ = 265561740. Its totient is φ = 68193216.

The previous prime is 139009649. The next prime is 139009679. The reversal of 139009672 is 276900931.

It can be written as a sum of positive squares in 2 ways, for example, as 131469156 + 7540516 = 11466^2 + 2746^2 .

It is not an unprimeable number, because it can be changed into a prime (139009679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163503 + ... + 164350.

Almost surely, 2^139009672 is an apocalyptic number.

It is an amenable number.

139009672 is a deficient number, since it is larger than the sum of its proper divisors (126552068).

139009672 is a wasteful number, since it uses less digits than its factorization.

139009672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327912 (or 327908 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 139009672 is about 11790.2362995828. The cubic root of 139009672 is about 518.0221613134.

The spelling of 139009672 in words is "one hundred thirty-nine million, nine thousand, six hundred seventy-two".