139805376 has 56 divisors (see below), whose sum is σ = 370905024. Its totient is φ = 46475520.

The previous prime is 139805371. The next prime is 139805387. The reversal of 139805376 is 673508931.

It is not an unprimeable number, because it can be changed into a prime (139805371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93531 + ... + 95013.

It is an arithmetic number, because the mean of its divisors is an integer number (6623304).

Almost surely, 2^139805376 is an apocalyptic number.

139805376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139805376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185452512).

139805376 is an abundant number, since it is smaller than the sum of its proper divisors (231099648).

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

139805376 is a wasteful number, since it uses less digits than its factorization.

139805376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 139805376 is about 11823.9323408078. The cubic root of 139805376 is about 519.0086833687.

The spelling of 139805376 in words is "one hundred thirty-nine million, eight hundred five thousand, three hundred seventy-six".