2499999 has 8 divisors (see below), whose sum is σ = 3351552. Its totient is φ = 1657560.

The previous prime is 2499997. The next prime is 2500009. The reversal of 2499999 is 9999942.

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

It is not a de Polignac number, because 2499999 - 2¹ = 2499997 is a prime.

2499999 is a modest number, since divided by 9999 gives 249 as remainder.

2499999 is a lucky number.

It is a plaindrome in base 5 and base 10.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499997) 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, 1609 + ... + 2754.

It is an arithmetic number, because the mean of its divisors is an integer number (418944).

2^2499999 is an apocalyptic number.

2499999 is a deficient number, since it is larger than the sum of its proper divisors (851553).

2499999 is a wasteful number, since it uses less digits than its factorization.

2499999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4557.

The product of its digits is 472392, while the sum is 51.

The square root of 2499999 is about 1581.1385138564. The cubic root of 2499999 is about 135.7208627336.

The spelling of 2499999 in words is "two million, four hundred ninety-nine thousand, nine hundred ninety-nine".