1113989 has 4 divisors (see below), whose sum is σ = 1172640. Its totient is φ = 1055340.

The previous prime is 1113971. The next prime is 1113991. The reversal of 1113989 is 9893111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1113989 - 2²⁰ = 65413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29297 + ... + 29334.

It is an arithmetic number, because the mean of its divisors is an integer number (293160).

2^1113989 is an apocalyptic number.

1113989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1113989 is a deficient number, since it is larger than the sum of its proper divisors (58651).

1113989 is an equidigital number, since it uses as much as digits as its factorization.

1113989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58650.

The product of its digits is 1944, while the sum is 32.

The square root of 1113989 is about 1055.4567731556. The cubic root of 1113989 is about 103.6637624705.

The spelling of 1113989 in words is "one million, one hundred thirteen thousand, nine hundred eighty-nine".