1080409 has 6 divisors (see below), whose sum is σ = 1187690. Its totient is φ = 982080.

The previous prime is 1080383. The next prime is 1080413. The reversal of 1080409 is 9040801.

It can be written as a sum of positive squares in only one way, i.e., 644809 + 435600 = 803^2 + 660^2 .

It is not a de Polignac number, because 1080409 - 2⁷ = 1080281 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1080409.

It is not an unprimeable number, because it can be changed into a prime (1080419) 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, 4344 + ... + 4585.

2^1080409 is an apocalyptic number.

It is an amenable number.

1080409 is a deficient number, since it is larger than the sum of its proper divisors (107281).

1080409 is an equidigital number, since it uses as much as digits as its factorization.

1080409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951 (or 8940 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1080409 is about 1039.4272461313. The cubic root of 1080409 is about 102.6115066505.

The spelling of 1080409 in words is "one million, eighty thousand, four hundred nine".