139599040 has 168 divisors, whose sum is σ = 401330160. Its totient is φ = 46061568.

The previous prime is 139599017. The next prime is 139599041. The reversal of 139599040 is 40995931.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 139598984 and 139599002.

It is not an unprimeable number, because it can be changed into a prime (139599041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 454567 + ... + 454873.

It is an arithmetic number, because the mean of its divisors is an integer number (2388870).

Almost surely, 2^139599040 is an apocalyptic number.

139599040 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 139599040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200665080).

139599040 is an abundant number, since it is smaller than the sum of its proper divisors (261731120).

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

139599040 is a wasteful number, since it uses less digits than its factorization.

139599040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 139599040 is about 11815.2037646416. The cubic root of 139599040 is about 518.7532260892.

The spelling of 139599040 in words is "one hundred thirty-nine million, five hundred ninety-nine thousand, forty".