2499917 has 4 divisors (see below), whose sum is σ = 2857056. Its totient is φ = 2142780.

The previous prime is 2499907. The next prime is 2499919. The reversal of 2499917 is 7199942.

It is a happy number.

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 2499917 - 2⁶ = 2499853 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 (2499919) 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, 178559 + ... + 178572.

It is an arithmetic number, because the mean of its divisors is an integer number (714264).

2^2499917 is an apocalyptic number.

It is an amenable number.

2499917 is a deficient number, since it is larger than the sum of its proper divisors (357139).

2499917 is an equidigital number, since it uses as much as digits as its factorization.

2499917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357138.

The product of its digits is 40824, while the sum is 41.

The square root of 2499917 is about 1581.1125829618. The cubic root of 2499917 is about 135.7193788354.

The spelling of 2499917 in words is "two million, four hundred ninety-nine thousand, nine hundred seventeen".