2259909 has 12 divisors (see below), whose sum is σ = 3279276. Its totient is φ = 1499712.

The previous prime is 2259889. The next prime is 2259913. The reversal of 2259909 is 9099522.

It can be written as a sum of positive squares in 2 ways, for example, as 2117025 + 142884 = 1455^2 + 378^2 .

It is not a de Polignac number, because 2259909 - 2⁷ = 2259781 is a prime.

It is a Curzon number.

2259909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2259919) 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, 2209 + ... + 3065.

It is an arithmetic number, because the mean of its divisors is an integer number (273273).

2^2259909 is an apocalyptic number.

It is an amenable number.

2259909 is a deficient number, since it is larger than the sum of its proper divisors (1019367).

2259909 is a wasteful number, since it uses less digits than its factorization.

2259909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 2259909 is about 1503.2993713828. The cubic root of 2259909 is about 131.2291504296.

The spelling of 2259909 in words is "two million, two hundred fifty-nine thousand, nine hundred nine".