2149889 has 8 divisors (see below), whose sum is σ = 2466240. Its totient is φ = 1835856.

The previous prime is 2149883. The next prime is 2149897. The reversal of 2149889 is 9889412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2149889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2149883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2567 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (308280).

2^2149889 is an apocalyptic number.

It is an amenable number.

2149889 is a deficient number, since it is larger than the sum of its proper divisors (316351).

2149889 is an equidigital number, since it uses as much as digits as its factorization.

2149889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159.

The product of its digits is 41472, while the sum is 41.

The square root of 2149889 is about 1466.2499786871. The cubic root of 2149889 is about 129.0640668884.

The spelling of 2149889 in words is "two million, one hundred forty-nine thousand, eight hundred eighty-nine".