2499885 has 24 divisors (see below), whose sum is σ = 4398264. Its totient is φ = 1313280.

The previous prime is 2499881. The next prime is 2499907. The reversal of 2499885 is 5889942.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 2499561 = 18^2 + 1581^2 .

It is not a de Polignac number, because 2499885 - 2² = 2499881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

2499885 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2499885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499881) 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, 2905 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (183261).

2^2499885 is an apocalyptic number.

It is an amenable number.

2499885 is a deficient number, since it is larger than the sum of its proper divisors (1898379).

2499885 is a wasteful number, since it uses less digits than its factorization.

2499885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 842 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 2499885 is about 1581.1024634729. The cubic root of 2499885 is about 135.7187997443.

The spelling of 2499885 in words is "two million, four hundred ninety-nine thousand, eight hundred eighty-five".