1389599072 has 24 divisors (see below), whose sum is σ = 2736991656. Its totient is φ = 694490112.

The previous prime is 1389599053. The next prime is 1389599131. The reversal of 1389599072 is 2709959831.

It is a super-2 number, since 2×1389599072² = 3861971161806522368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74603 + ... + 91349.

It is an arithmetic number, because the mean of its divisors is an integer number (114041319).

Almost surely, 2^1389599072 is an apocalyptic number.

It is an amenable number.

1389599072 is a deficient number, since it is larger than the sum of its proper divisors (1347392584).

1389599072 is a wasteful number, since it uses less digits than its factorization.

1389599072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19350 (or 19342 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 1389599072 is about 37277.3265135793. The cubic root of 1389599072 is about 1115.9117190566.

The spelling of 1389599072 in words is "one billion, three hundred eighty-nine million, five hundred ninety-nine thousand, seventy-two".