1389633472 has 14 divisors (see below), whose sum is σ = 2757554048. Its totient is φ = 694816704.

The previous prime is 1389633449. The next prime is 1389633491. The reversal of 1389633472 is 2743369831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10856448 + ... + 10856575.

Almost surely, 2^1389633472 is an apocalyptic number.

It is an amenable number.

1389633472 is a deficient number, since it is larger than the sum of its proper divisors (1367920576).

1389633472 is an equidigital number, since it uses as much as digits as its factorization.

1389633472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21713035 (or 21713025 counting only the distinct ones).

The product of its digits is 653184, while the sum is 46.

The square root of 1389633472 is about 37277.7879172035. The cubic root of 1389633472 is about 1115.9209272393.

The spelling of 1389633472 in words is "one billion, three hundred eighty-nine million, six hundred thirty-three thousand, four hundred seventy-two".