2499609 has 16 divisors (see below), whose sum is σ = 3913088. Its totient is φ = 1389312.

The previous prime is 2499599. The next prime is 2499613. The reversal of 2499609 is 9069942.

It is not a de Polignac number, because 2499609 - 2⁵ = 2499577 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2499619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 832 + ... + 2385.

It is an arithmetic number, because the mean of its divisors is an integer number (244568).

2^2499609 is an apocalyptic number.

It is an amenable number.

2499609 is a deficient number, since it is larger than the sum of its proper divisors (1413479).

2499609 is a wasteful number, since it uses less digits than its factorization.

2499609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 2499609 is about 1581.0151801928. The cubic root of 2499609 is about 135.7138048789.

The spelling of 2499609 in words is "two million, four hundred ninety-nine thousand, six hundred nine".