2864399 has 4 divisors (see below), whose sum is σ = 2882136. Its totient is φ = 2846664.

The previous prime is 2864371. The next prime is 2864401. The reversal of 2864399 is 9934682.

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 2864399 - 2²⁰ = 1815823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864339) 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, 8624 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (720534).

2^2864399 is an apocalyptic number.

2864399 is a deficient number, since it is larger than the sum of its proper divisors (17737).

2864399 is a wasteful number, since it uses less digits than its factorization.

2864399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17736.

The product of its digits is 93312, while the sum is 41.

The square root of 2864399 is about 1692.4535444141. The cubic root of 2864399 is about 142.0183636900.

The spelling of 2864399 in words is "two million, eight hundred sixty-four thousand, three hundred ninety-nine".