139857950 has 12 divisors (see below), whose sum is σ = 260135880. Its totient is φ = 55943160.

The previous prime is 139857943. The next prime is 139857989. The reversal of 139857950 is 59758931.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 139857895 and 139857904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1398530 + ... + 1398629.

It is an arithmetic number, because the mean of its divisors is an integer number (21677990).

Almost surely, 2^139857950 is an apocalyptic number.

139857950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139857950 is a deficient number, since it is larger than the sum of its proper divisors (120277930).

139857950 is a wasteful number, since it uses less digits than its factorization.

139857950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2797171 (or 2797166 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 139857950 is about 11826.1553346808. The cubic root of 139857950 is about 519.0737331869.

The spelling of 139857950 in words is "one hundred thirty-nine million, eight hundred fifty-seven thousand, nine hundred fifty".