2143899 has 12 divisors (see below), whose sum is σ = 3231696. Its totient is φ = 1366992.

The previous prime is 2143877. The next prime is 2143901. The reversal of 2143899 is 9983412.

2143899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2143899 - 2¹⁷ = 2012827 is a prime.

2143899 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2143829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4972 + ... + 5385.

It is an arithmetic number, because the mean of its divisors is an integer number (269308).

2^2143899 is an apocalyptic number.

2143899 is a deficient number, since it is larger than the sum of its proper divisors (1087797).

2143899 is a wasteful number, since it uses less digits than its factorization.

2143899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10386 (or 10383 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2143899 is about 1464.2059281399. The cubic root of 2143899 is about 128.9440897067.

The spelling of 2143899 in words is "two million, one hundred forty-three thousand, eight hundred ninety-nine".