2199399 has 4 divisors (see below), whose sum is σ = 2932536. Its totient is φ = 1466264.

The previous prime is 2199377. The next prime is 2199401. The reversal of 2199399 is 9939912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2199399 - 2⁸ = 2199143 is a prime.

It is a super-2 number, since 2×2199399² = 9674711922402, which contains 22 as substring.

It is a D-number.

2199399 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2199399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366564 + ... + 366569.

It is an arithmetic number, because the mean of its divisors is an integer number (733134).

2^2199399 is an apocalyptic number.

2199399 is a deficient number, since it is larger than the sum of its proper divisors (733137).

2199399 is an equidigital number, since it uses as much as digits as its factorization.

2199399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733136.

The product of its digits is 39366, while the sum is 42.

The square root of 2199399 is about 1483.0370865221. The cubic root of 2199399 is about 130.0473003420.

The spelling of 2199399 in words is "two million, one hundred ninety-nine thousand, three hundred ninety-nine".