2499986 has 8 divisors (see below), whose sum is σ = 3970620. Its totient is φ = 1176448.

The previous prime is 2499983. The next prime is 2499989. The reversal of 2499986 is 6899942.

It is an interprime number because it is at equal distance from previous prime (2499983) and next prime (2499989).

It can be written as a sum of positive squares in 2 ways, for example, as 2343961 + 156025 = 1531^2 + 395^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2499986.

It is not an unprimeable number, because it can be changed into a prime (2499983) 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, 36731 + ... + 36798.

2^2499986 is an apocalyptic number.

2499986 is a deficient number, since it is larger than the sum of its proper divisors (1470634).

2499986 is a wasteful number, since it uses less digits than its factorization.

2499986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73548.

The product of its digits is 279936, while the sum is 47.

The square root of 2499986 is about 1581.1344028893. The cubic root of 2499986 is about 135.7206274836.

The spelling of 2499986 in words is "two million, four hundred ninety-nine thousand, nine hundred eighty-six".