1389314976 has 192 divisors, whose sum is σ = 4277403648. Its totient is φ = 386684928.

The previous prime is 1389314957. The next prime is 1389314989. The reversal of 1389314976 is 6794139831.

It is a super-2 number, since 2×1389314976² = 3860392205075761152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6230001 + ... + 6230223.

It is an arithmetic number, because the mean of its divisors is an integer number (22278144).

Almost surely, 2^1389314976 is an apocalyptic number.

1389314976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389314976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2138701824).

1389314976 is an abundant number, since it is smaller than the sum of its proper divisors (2888088672).

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

1389314976 is a wasteful number, since it uses less digits than its factorization.

1389314976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 435 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 1389314976 is about 37273.5157450971. The cubic root of 1389314976 is about 1115.8356665056.

The spelling of 1389314976 in words is "one billion, three hundred eighty-nine million, three hundred fourteen thousand, nine hundred seventy-six".