139059840 has 256 divisors, whose sum is σ = 479416320. Its totient is φ = 34197504.

The previous prime is 139059839. The next prime is 139059857. The reversal of 139059840 is 48950931.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2075487 + ... + 2075553.

It is an arithmetic number, because the mean of its divisors is an integer number (1872720).

Almost surely, 2^139059840 is an apocalyptic number.

139059840 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 139059840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239708160).

139059840 is an abundant number, since it is smaller than the sum of its proper divisors (340356480).

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

139059840 is a wasteful number, since it uses less digits than its factorization.

139059840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 139059840 is about 11792.3636307570. The cubic root of 139059840 is about 518.0844711506.

The spelling of 139059840 in words is "one hundred thirty-nine million, fifty-nine thousand, eight hundred forty".