2143399 has 4 divisors (see below), whose sum is σ = 2148120. Its totient is φ = 2138680.

The previous prime is 2143391. The next prime is 2143417. The reversal of 2143399 is 9933412.

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 2143399 - 2³ = 2143391 is a prime.

It is a d-powerful number, because it can be written as 2⁹ + 1 + 4⁷ + 3¹² + 3¹³ + 9 + 9³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143391) 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, 1597 + ... + 2614.

It is an arithmetic number, because the mean of its divisors is an integer number (537030).

2^2143399 is an apocalyptic number.

2143399 is a deficient number, since it is larger than the sum of its proper divisors (4721).

2143399 is an equidigital number, since it uses as much as digits as its factorization.

2143399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720.

The product of its digits is 5832, while the sum is 31.

The square root of 2143399 is about 1464.0351771730. The cubic root of 2143399 is about 128.9340648163.

The spelling of 2143399 in words is "two million, one hundred forty-three thousand, three hundred ninety-nine".