1389690960 has 120 divisors (see below), whose sum is σ = 5011438176. Its totient is φ = 317640960.

The previous prime is 1389690947. The next prime is 1389690997. The reversal of 1389690960 is 690969831.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47326 + ... + 70845.

Almost surely, 2^1389690960 is an apocalyptic number.

1389690960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389690960 is an abundant number, since it is smaller than the sum of its proper divisors (3621747216).

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

1389690960 is a wasteful number, since it uses less digits than its factorization.

1389690960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118201 (or 118188 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 51.

The square root of 1389690960 is about 37278.5589850252. The cubic root of 1389690960 is about 1115.9363152724.

The spelling of 1389690960 in words is "one billion, three hundred eighty-nine million, six hundred ninety thousand, nine hundred sixty".