1399360 has 28 divisors (see below), whose sum is σ = 3332988. Its totient is φ = 559616.

The previous prime is 1399357. The next prime is 1399361. The reversal of 1399360 is 639931.

It can be written as a sum of positive squares in 2 ways, for example, as 652864 + 746496 = 808^2 + 864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1867 + ... + 2506.

2^1399360 is an apocalyptic number.

1399360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1399360 is an abundant number, since it is smaller than the sum of its proper divisors (1933628).

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

1399360 is an equidigital number, since it uses as much as digits as its factorization.

1399360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4390 (or 4380 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 1399360 is about 1182.9454763428. The cubic root of 1399360 is about 111.8518449212.

The spelling of 1399360 in words is "one million, three hundred ninety-nine thousand, three hundred sixty".