2259009 has 15 divisors (see below), whose sum is σ = 3394897.
Its totient is φ = 1496988.
The previous prime is 2258987. The next prime is 2259029. The reversal of 2259009 is 9009522.
The square root of 2259009 is 1503.
It is a perfect power (a square), and thus also a powerful number.
It is not a de Polignac number, because 2259009 - 215 = 2226241 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2259029) by changing a digit.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 13444 + ... + 13610.
22259009 is an apocalyptic number.
2259009 is the 1503-rd square number.
2259009 is the 752-nd centered octagonal number.
It is an amenable number.
2259009 is a deficient number, since it is larger than the sum of its proper divisors (1135888).
2259009 is an frugal number, since it uses more digits than its factorization.
2259009 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 346 (or 170 counting only the distinct ones).
The product of its (nonzero) digits is 1620, while the sum is 27.
The cubic root of 2259009 is about 131.2117276164.
The spelling of 2259009 in words is "two million, two hundred fifty-nine thousand, nine".