1080399 has 8 divisors (see below), whose sum is σ = 1450800. Its totient is φ = 715136.

The previous prime is 1080383. The next prime is 1080413. The reversal of 1080399 is 9930801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1080399 - 2⁴ = 1080383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (181350).

2^1080399 is an apocalyptic number.

1080399 is a deficient number, since it is larger than the sum of its proper divisors (370401).

1080399 is a wasteful number, since it uses less digits than its factorization.

1080399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1080399 is about 1039.4224357786. The cubic root of 1080399 is about 102.6111900672.

The spelling of 1080399 in words is "one million, eighty thousand, three hundred ninety-nine".