139045800 has 96 divisors (see below), whose sum is σ = 453765600. Its totient is φ = 35124480.

The previous prime is 139045793. The next prime is 139045811. The reversal of 139045800 is 8540931.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5302 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (4726725).

Almost surely, 2^139045800 is an apocalyptic number.

139045800 is a gapful number since it is divisible by the number (10) 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 139045800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226882800).

139045800 is an abundant number, since it is smaller than the sum of its proper divisors (314719800).

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

139045800 is a wasteful number, since it uses less digits than its factorization.

139045800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12235 (or 12226 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 139045800 is about 11791.7683152274. The cubic root of 139045800 is about 518.0670346504.

The spelling of 139045800 in words is "one hundred thirty-nine million, forty-five thousand, eight hundred".