2489917 has 8 divisors (see below), whose sum is σ = 2550240. Its totient is φ = 2430480.

The previous prime is 2489909. The next prime is 2489923. The reversal of 2489917 is 7199842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2489917 - 2³ = 2489909 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 2489917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489947) 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, 10759 + ... + 10987.

It is an arithmetic number, because the mean of its divisors is an integer number (318780).

2^2489917 is an apocalyptic number.

It is an amenable number.

2489917 is a deficient number, since it is larger than the sum of its proper divisors (60323).

2489917 is a wasteful number, since it uses less digits than its factorization.

2489917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its digits is 36288, while the sum is 40.

The square root of 2489917 is about 1577.9470840304. The cubic root of 2489917 is about 135.5381718230.

The spelling of 2489917 in words is "two million, four hundred eighty-nine thousand, nine hundred seventeen".