2649999 has 16 divisors (see below), whose sum is σ = 3890304. Its totient is φ = 1591200.

The previous prime is 2649989. The next prime is 2650007. The reversal of 2649999 is 9999462.

It is not a de Polignac number, because 2649999 - 2⁵ = 2649967 is a prime.

2649999 is a modest number, since divided by 9999 gives 264 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4017 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (243144).

2^2649999 is an apocalyptic number.

2649999 is a deficient number, since it is larger than the sum of its proper divisors (1240305).

2649999 is a wasteful number, since it uses less digits than its factorization.

2649999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its digits is 314928, while the sum is 48.

The square root of 2649999 is about 1627.8817524624. The cubic root of 2649999 is about 138.3827329578.

The spelling of 2649999 in words is "two million, six hundred forty-nine thousand, nine hundred ninety-nine".