2317989 has 4 divisors (see below), whose sum is σ = 3090656. Its totient is φ = 1545324.

The previous prime is 2317979. The next prime is 2318003. The reversal of 2317989 is 9897132.

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 not a de Polignac number, because 2317989 - 2⁵ = 2317957 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

2317989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2317919) 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, 386329 + ... + 386334.

It is an arithmetic number, because the mean of its divisors is an integer number (772664).

2^2317989 is an apocalyptic number.

It is an amenable number.

2317989 is a deficient number, since it is larger than the sum of its proper divisors (772667).

2317989 is an equidigital number, since it uses as much as digits as its factorization.

2317989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772666.

The product of its digits is 27216, while the sum is 39.

The square root of 2317989 is about 1522.4943349648. The cubic root of 2317989 is about 132.3438578400.

The spelling of 2317989 in words is "two million, three hundred seventeen thousand, nine hundred eighty-nine".