1389400 has 24 divisors (see below), whose sum is σ = 3230820. Its totient is φ = 555680.

The previous prime is 1389383. The next prime is 1389403. The reversal of 1389400 is 49831.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3274 + ... + 3673.

2^1389400 is an apocalyptic number.

1389400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389400 is an abundant number, since it is smaller than the sum of its proper divisors (1841420).

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

1389400 is a wasteful number, since it uses less digits than its factorization.

1389400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963 (or 6954 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1389400 is about 1178.7281281110. The cubic root of 1389400 is about 111.5858428533.

The spelling of 1389400 in words is "one million, three hundred eighty-nine thousand, four hundred".