1389087300 has 144 divisors (see below), whose sum is σ = 4307974272. Its totient is φ = 344678400.

The previous prime is 1389087299. The next prime is 1389087311. The reversal of 1389087300 is 37809831.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252580 + ... + 258020.

It is an arithmetic number, because the mean of its divisors is an integer number (29916488).

Almost surely, 2^1389087300 is an apocalyptic number.

1389087300 is a gapful number since it is divisible by the number (10) 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 1389087300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2153987136).

1389087300 is an abundant number, since it is smaller than the sum of its proper divisors (2918886972).

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

1389087300 is a wasteful number, since it uses less digits than its factorization.

1389087300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 1389087300 is about 37270.4614943255. The cubic root of 1389087300 is about 1115.7747101147.

The spelling of 1389087300 in words is "one billion, three hundred eighty-nine million, eighty-seven thousand, three hundred".