1389088824 has 32 divisors (see below), whose sum is σ = 3479656320. Its totient is φ = 462105056.

The previous prime is 1389088783. The next prime is 1389088829. The reversal of 1389088824 is 4288809831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389088829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45462 + ... + 69605.

It is an arithmetic number, because the mean of its divisors is an integer number (108739260).

Almost surely, 2^1389088824 is an apocalyptic number.

It is an amenable number.

1389088824 is an abundant number, since it is smaller than the sum of its proper divisors (2090567496).

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

1389088824 is a wasteful number, since it uses less digits than its factorization.

1389088824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115579 (or 115575 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 1389088824 is about 37270.4819394652. The cubic root of 1389088824 is about 1115.7751181620.

The spelling of 1389088824 in words is "one billion, three hundred eighty-nine million, eighty-eight thousand, eight hundred twenty-four".