1389132708 has 24 divisors (see below), whose sum is σ = 3289689312. Its totient is φ = 456132864.

The previous prime is 1389132691. The next prime is 1389132739. The reversal of 1389132708 is 8072319831.

1389132708 is digitally balanced in base 4, 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 1389132708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863085 + ... + 864692.

It is an arithmetic number, because the mean of its divisors is an integer number (137070388).

Almost surely, 2^1389132708 is an apocalyptic number.

It is an amenable number.

1389132708 is an abundant number, since it is smaller than the sum of its proper divisors (1900556604).

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

1389132708 is a wasteful number, since it uses less digits than its factorization.

1389132708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727851 (or 1727849 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1389132708 is about 37271.0706580855. The cubic root of 1389132708 is about 1115.7868678689.

The spelling of 1389132708 in words is "one billion, three hundred eighty-nine million, one hundred thirty-two thousand, seven hundred eight".