139407268 has 96 divisors (see below), whose sum is σ = 336768768. Its totient is φ = 48729600.

The previous prime is 139407253. The next prime is 139407269. The reversal of 139407268 is 862704931.

139407268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139407268.

It is not an unprimeable number, because it can be changed into a prime (139407269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147678 + ... + 148618.

It is an arithmetic number, because the mean of its divisors is an integer number (3508008).

Almost surely, 2^139407268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139407268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168384384).

139407268 is an abundant number, since it is smaller than the sum of its proper divisors (197361500).

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

139407268 is a wasteful number, since it uses less digits than its factorization.

139407268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 1011 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 139407268 is about 11807.0854998175. The cubic root of 139407268 is about 518.5155741861.

The spelling of 139407268 in words is "one hundred thirty-nine million, four hundred seven thousand, two hundred sixty-eight".