2117799 has 8 divisors (see below), whose sum is σ = 3137520. Its totient is φ = 1411848.

The previous prime is 2117777. The next prime is 2117813. The reversal of 2117799 is 9977112.

It is not a de Polignac number, because 2117799 - 2⁷ = 2117671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117719) 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, 39192 + ... + 39245.

It is an arithmetic number, because the mean of its divisors is an integer number (392190).

2^2117799 is an apocalyptic number.

2117799 is a deficient number, since it is larger than the sum of its proper divisors (1019721).

2117799 is an equidigital number, since it uses as much as digits as its factorization.

2117799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78446 (or 78440 counting only the distinct ones).

The product of its digits is 7938, while the sum is 36.

The square root of 2117799 is about 1455.2659550749. The cubic root of 2117799 is about 128.4186932344.

It can be divided in two parts, 2117 and 799, that added together give a square (2916 = 54²).

The spelling of 2117799 in words is "two million, one hundred seventeen thousand, seven hundred ninety-nine".