1109997 has 24 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 633528.

The previous prime is 1109987. The next prime is 1110007. The reversal of 1109997 is 7999011.

It is an interprime number because it is at equal distance from previous prime (1109987) and next prime (1110007).

It is not a de Polignac number, because 1109997 - 2⁷ = 1109869 is a prime.

It is a super-3 number, since 3×1109997³ = 4102859733389909919, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 904 + ... + 1742.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2^1109997 is an apocalyptic number.

It is an amenable number.

1109997 is a deficient number, since it is larger than the sum of its proper divisors (805203).

1109997 is an equidigital number, since it uses as much as digits as its factorization.

1109997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 1109997 is about 1053.5639515473. The cubic root of 1109997 is about 103.5397872656.

The spelling of 1109997 in words is "one million, one hundred nine thousand, nine hundred ninety-seven".