1080999 has 8 divisors (see below), whose sum is σ = 1601520. Its totient is φ = 720648.

The previous prime is 1080983. The next prime is 1081027. The reversal of 1080999 is 9990801.

It is not a de Polignac number, because 1080999 - 2⁴ = 1080983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19992 + ... + 20045.

It is an arithmetic number, because the mean of its divisors is an integer number (200190).

2^1080999 is an apocalyptic number.

1080999 is a deficient number, since it is larger than the sum of its proper divisors (520521).

1080999 is an equidigital number, since it uses as much as digits as its factorization.

1080999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40046 (or 40040 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 1080999 is about 1039.7110175429. The cubic root of 1080999 is about 102.6301816066.

The spelling of 1080999 in words is "one million, eighty thousand, nine hundred ninety-nine".