1389642964 has 12 divisors (see below), whose sum is σ = 2432757600. Its totient is φ = 694569368.

The previous prime is 1389642869. The next prime is 1389642979. The reversal of 1389642964 is 4692469831.

It is a super-2 number, since 2×1389642964² = 3862215134789410592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50344 + ... + 72895.

It is an arithmetic number, because the mean of its divisors is an integer number (202729800).

Almost surely, 2^1389642964 is an apocalyptic number.

It is an amenable number.

1389642964 is a deficient number, since it is larger than the sum of its proper divisors (1043114636).

1389642964 is a wasteful number, since it uses less digits than its factorization.

1389642964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126062 (or 126060 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 52.

The square root of 1389642964 is about 37277.9152314075. The cubic root of 1389642964 is about 1115.9234680285.

The spelling of 1389642964 in words is "one billion, three hundred eighty-nine million, six hundred forty-two thousand, nine hundred sixty-four".