2163399 has 12 divisors (see below), whose sum is σ = 3355704. Its totient is φ = 1236144.

The previous prime is 2163361. The next prime is 2163401. The reversal of 2163399 is 9933612.

It is not a de Polignac number, because 2163399 - 2¹² = 2159303 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7212 + ... + 7505.

It is an arithmetic number, because the mean of its divisors is an integer number (279642).

2^2163399 is an apocalyptic number.

2163399 is a deficient number, since it is larger than the sum of its proper divisors (1192305).

2163399 is a wasteful number, since it uses less digits than its factorization.

2163399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14734 (or 14727 counting only the distinct ones).

The product of its digits is 8748, while the sum is 33.

The square root of 2163399 is about 1470.8497543937. The cubic root of 2163399 is about 129.3338507141. Note that the first 3 decimals are identical.

The spelling of 2163399 in words is "two million, one hundred sixty-three thousand, three hundred ninety-nine".