2499987 has 8 divisors (see below), whose sum is σ = 3809536. Its totient is φ = 1428552.

The previous prime is 2499983. The next prime is 2499989. The reversal of 2499987 is 7899942.

It is a happy number.

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

It is not a de Polignac number, because 2499987 - 2² = 2499983 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

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 7 ways as a sum of consecutive naturals, for example, 59503 + ... + 59544.

It is an arithmetic number, because the mean of its divisors is an integer number (476192).

2^2499987 is an apocalyptic number.

2499987 is a deficient number, since it is larger than the sum of its proper divisors (1309549).

2499987 is a wasteful number, since it uses less digits than its factorization.

2499987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119057.

The product of its digits is 326592, while the sum is 48.

The square root of 2499987 is about 1581.1347191179. The cubic root of 2499987 is about 135.7206455798.

It can be divided in two parts, 2499 and 987, that added together give a triangular number (3486 = T₈₃).

The spelling of 2499987 in words is "two million, four hundred ninety-nine thousand, nine hundred eighty-seven".