139470636 has 48 divisors (see below), whose sum is σ = 330118880. Its totient is φ = 45826560.

The previous prime is 139470619. The next prime is 139470647. The reversal of 139470636 is 636074931.

It is a junction number, because it is equal to n+sod(n) for n = 139470594 and 139470603.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340800 + ... + 341208.

Almost surely, 2^139470636 is an apocalyptic number.

It is an amenable number.

139470636 is an abundant number, since it is smaller than the sum of its proper divisors (190648244).

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

139470636 is a wasteful number, since it uses less digits than its factorization.

139470636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 139470636 is about 11809.7686683525. The cubic root of 139470636 is about 518.5941265652.

The spelling of 139470636 in words is "one hundred thirty-nine million, four hundred seventy thousand, six hundred thirty-six".