139849460 has 24 divisors (see below), whose sum is σ = 293914656. Its totient is φ = 55895840.

The previous prime is 139849447. The next prime is 139849471. The reversal of 139849460 is 64948931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38315 + ... + 41805.

It is an arithmetic number, because the mean of its divisors is an integer number (12246444).

Almost surely, 2^139849460 is an apocalyptic number.

139849460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139849460 is an abundant number, since it is smaller than the sum of its proper divisors (154065196).

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

139849460 is a wasteful number, since it uses less digits than its factorization.

139849460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503 (or 5501 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 139849460 is about 11825.7963791028. The cubic root of 139849460 is about 519.0632296124.

The spelling of 139849460 in words is "one hundred thirty-nine million, eight hundred forty-nine thousand, four hundred sixty".