2669399 has 4 divisors (see below), whose sum is σ = 2693136. Its totient is φ = 2645664.

The previous prime is 2669393. The next prime is 2669417. The reversal of 2669399 is 9939662.

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 2669399 - 2²⁰ = 1620823 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2669393) 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 3 ways as a sum of consecutive naturals, for example, 11699 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (673284).

2^2669399 is an apocalyptic number.

2669399 is a deficient number, since it is larger than the sum of its proper divisors (23737).

2669399 is a wasteful number, since it uses less digits than its factorization.

2669399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23736.

The product of its digits is 157464, while the sum is 44.

The square root of 2669399 is about 1633.8295504734. The cubic root of 2669399 is about 138.7196010562.

The spelling of 2669399 in words is "two million, six hundred sixty-nine thousand, three hundred ninety-nine".