139045950 has 96 divisors (see below), whose sum is σ = 386641920. Its totient is φ = 36741600.

The previous prime is 139045939. The next prime is 139045957. The reversal of 139045950 is 59540931.

It is a super-2 number, since 2×139045950² = 38667552422805000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139045957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171045 + ... + 171855.

It is an arithmetic number, because the mean of its divisors is an integer number (4027520).

Almost surely, 2^139045950 is an apocalyptic number.

139045950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139045950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193320960).

139045950 is an abundant number, since it is smaller than the sum of its proper divisors (247595970).

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

139045950 is a wasteful number, since it uses less digits than its factorization.

139045950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 139045950 is about 11791.7746755948. The cubic root of 139045950 is about 518.0672209440.

The spelling of 139045950 in words is "one hundred thirty-nine million, forty-five thousand, nine hundred fifty".