1389032900 has 18 divisors (see below), whose sum is σ = 3014201610. Its totient is φ = 555613120.

The previous prime is 1389032863. The next prime is 1389032917. The reversal of 1389032900 is 92309831.

It can be written as a sum of positive squares in 3 ways, for example, as 89718784 + 1299314116 = 9472^2 + 36046^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6945065 + ... + 6945264.

It is an arithmetic number, because the mean of its divisors is an integer number (167455645).

Almost surely, 2^1389032900 is an apocalyptic number.

1389032900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389032900 is an abundant number, since it is smaller than the sum of its proper divisors (1625168710).

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

1389032900 is a wasteful number, since it uses less digits than its factorization.

1389032900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890343 (or 13890336 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1389032900 is about 37269.7316867186. The cubic root of 1389032900 is about 1115.7601444507.

The spelling of 1389032900 in words is "one billion, three hundred eighty-nine million, thirty-two thousand, nine hundred".