139096440 has 160 divisors (see below), whose sum is σ = 534394080. Its totient is φ = 31788288.

The previous prime is 139096439. The next prime is 139096457. The reversal of 139096440 is 44690931.

139096440 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 9 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 139096395 and 139096404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19614 + ... + 25746.

It is an arithmetic number, because the mean of its divisors is an integer number (3339963).

Almost surely, 2^139096440 is an apocalyptic number.

139096440 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 139096440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267197040).

139096440 is an abundant number, since it is smaller than the sum of its proper divisors (395297640).

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

139096440 is a wasteful number, since it uses less digits than its factorization.

139096440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163 (or 6150 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 139096440 is about 11793.9153803985. The cubic root of 139096440 is about 518.1299197582.

The spelling of 139096440 in words is "one hundred thirty-nine million, ninety-six thousand, four hundred forty".