139793140 has 12 divisors (see below), whose sum is σ = 293565636. Its totient is φ = 55917248.

The previous prime is 139793131. The next prime is 139793161. The reversal of 139793140 is 41397931.

It can be written as a sum of positive squares in 2 ways, for example, as 73891216 + 65901924 = 8596^2 + 8118^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139793140.

It is a congruent number.

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, 3494809 + ... + 3494848.

It is an arithmetic number, because the mean of its divisors is an integer number (24463803).

Almost surely, 2^139793140 is an apocalyptic number.

139793140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139793140 is an abundant number, since it is smaller than the sum of its proper divisors (153772496).

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

139793140 is a wasteful number, since it uses less digits than its factorization.

139793140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989666 (or 6989664 counting only the distinct ones).

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

The square root of 139793140 is about 11823.4149043328. The cubic root of 139793140 is about 518.9935414246.

The spelling of 139793140 in words is "one hundred thirty-nine million, seven hundred ninety-three thousand, one hundred forty".