2499867 has 12 divisors (see below), whose sum is σ = 3823560. Its totient is φ = 1568448.

The previous prime is 2499863. The next prime is 2499881. The reversal of 2499867 is 7689942.

It is a happy number.

It is not a de Polignac number, because 2499867 - 2² = 2499863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2499863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8017 + ... + 8322.

It is an arithmetic number, because the mean of its divisors is an integer number (318630).

2^2499867 is an apocalyptic number.

2499867 is a deficient number, since it is larger than the sum of its proper divisors (1323693).

2499867 is a wasteful number, since it uses less digits than its factorization.

2499867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16362 (or 16359 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 2499867 is about 1581.0967712319. The cubic root of 2499867 is about 135.7184740034.

The spelling of 2499867 in words is "two million, four hundred ninety-nine thousand, eight hundred sixty-seven".