1080899 has 2 divisors, whose sum is σ = 1080900. Its totient is φ = 1080898.

The previous prime is 1080857. The next prime is 1080901. The reversal of 1080899 is 9980801.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1080899 - 2¹⁶ = 1015363 is a prime.

Together with 1080901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1080199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540449 + 540450.

It is an arithmetic number, because the mean of its divisors is an integer number (540450).

2^1080899 is an apocalyptic number.

1080899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080899 is an equidigital number, since it uses as much as digits as its factorization.

1080899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1080899 is about 1039.6629261448. The cubic root of 1080899 is about 102.6270168382.

The spelling of 1080899 in words is "one million, eighty thousand, eight hundred ninety-nine".