139068460 has 12 divisors (see below), whose sum is σ = 292043808. Its totient is φ = 55627376.

The previous prime is 139068443. The next prime is 139068491. The reversal of 139068460 is 64860931.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476692 + ... + 3476731.

It is an arithmetic number, because the mean of its divisors is an integer number (24336984).

Almost surely, 2^139068460 is an apocalyptic number.

139068460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139068460 is an abundant number, since it is smaller than the sum of its proper divisors (152975348).

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

139068460 is a wasteful number, since it uses less digits than its factorization.

139068460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6953432 (or 6953430 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 139068460 is about 11792.7291158578. The cubic root of 139068460 is about 518.0951758848.

It can be divided in two parts, 13906 and 8460, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 139068460 in words is "one hundred thirty-nine million, sixty-eight thousand, four hundred sixty".