139944960 has 132 divisors (see below), whose sum is σ = 485065308. Its totient is φ = 37306368.

The previous prime is 139944929. The next prime is 139944997. The reversal of 139944960 is 69449931.

It can be written as a sum of positive squares in 2 ways, for example, as 86713344 + 53231616 = 9312^2 + 7296^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44562 + ... + 47598.

Almost surely, 2^139944960 is an apocalyptic number.

139944960 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 139944960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242532654).

139944960 is an abundant number, since it is smaller than the sum of its proper divisors (345120348).

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

139944960 is a wasteful number, since it uses less digits than its factorization.

139944960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 139944960 is about 11829.8334730460. The cubic root of 139944960 is about 519.1813548669.

The spelling of 139944960 in words is "one hundred thirty-nine million, nine hundred forty-four thousand, nine hundred sixty".