2799999 has 6 divisors (see below), whose sum is σ = 4044456. Its totient is φ = 1866660.

The previous prime is 2799991. The next prime is 2800001. The reversal of 2799999 is 9999972.

It is not a de Polignac number, because 2799999 - 2³ = 2799991 is a prime.

2799999 is a modest number, since divided by 9999 gives 279 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2799991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155547 + ... + 155564.

It is an arithmetic number, because the mean of its divisors is an integer number (674076).

2^2799999 is an apocalyptic number.

2799999 is a deficient number, since it is larger than the sum of its proper divisors (1244457).

2799999 is a wasteful number, since it uses less digits than its factorization.

2799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311117 (or 311114 counting only the distinct ones).

The product of its digits is 826686, while the sum is 54.

The square root of 2799999 is about 1673.3197542610. The cubic root of 2799999 is about 140.9459578620.

The spelling of 2799999 in words is "two million, seven hundred ninety-nine thousand, nine hundred ninety-nine".