1389324980 has 24 divisors (see below), whose sum is σ = 2920488480. Its totient is φ = 555176480.

The previous prime is 1389324961. The next prime is 1389324997. The reversal of 1389324980 is 894239831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13706 + ... + 54465.

It is an arithmetic number, because the mean of its divisors is an integer number (121687020).

Almost surely, 2^1389324980 is an apocalyptic number.

1389324980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389324980 is an abundant number, since it is smaller than the sum of its proper divisors (1531163500).

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

1389324980 is a wasteful number, since it uses less digits than its factorization.

1389324980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69199 (or 69197 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1389324980 is about 37273.6499420167. The cubic root of 1389324980 is about 1115.8383447543.

The spelling of 1389324980 in words is "one billion, three hundred eighty-nine million, three hundred twenty-four thousand, nine hundred eighty".