1389890700 has 162 divisors, whose sum is σ = 4788963452. Its totient is φ = 336916800.

The previous prime is 1389890683. The next prime is 1389890701. The reversal of 1389890700 is 70989831.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1389890701) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 102519 + ... + 115281.

Almost surely, 2^1389890700 is an apocalyptic number.

1389890700 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 1389890700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2394481726).

1389890700 is an abundant number, since it is smaller than the sum of its proper divisors (3399072752).

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

1389890700 is a wasteful number, since it uses less digits than its factorization.

1389890700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805 (or 12784 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1389890700 is about 37281.2379086317. The cubic root of 1389890700 is about 1115.9897771446.

The spelling of 1389890700 in words is "one billion, three hundred eighty-nine million, eight hundred ninety thousand, seven hundred".