2144989 has 16 divisors (see below), whose sum is σ = 2712960. Its totient is φ = 1647360.

The previous prime is 2144977. The next prime is 2144993. The reversal of 2144989 is 9894412.

It is a happy number.

It is not a de Polignac number, because 2144989 - 2⁹ = 2144477 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 (2144999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6697 + ... + 7009.

It is an arithmetic number, because the mean of its divisors is an integer number (169560).

2^2144989 is an apocalyptic number.

It is an amenable number.

2144989 is a deficient number, since it is larger than the sum of its proper divisors (567971).

2144989 is a wasteful number, since it uses less digits than its factorization.

2144989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 20736, while the sum is 37.

The square root of 2144989 is about 1464.5780962448. The cubic root of 2144989 is about 128.9659385664.

It can be divided in two parts, 2 and 144989, that added together give a triangular number (144991 = T₅₃₈).

The spelling of 2144989 in words is "two million, one hundred forty-four thousand, nine hundred eighty-nine".