2209397 has 4 divisors (see below), whose sum is σ = 2221920. Its totient is φ = 2196876.

The previous prime is 2209343. The next prime is 2209409. The reversal of 2209397 is 7939022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2209397 - 2¹⁶ = 2143861 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 (2209327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5993 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (555480).

2^2209397 is an apocalyptic number.

It is an amenable number.

2209397 is a deficient number, since it is larger than the sum of its proper divisors (12523).

2209397 is a wasteful number, since it uses less digits than its factorization.

2209397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 2209397 is about 1486.4040500483. The cubic root of 2209397 is about 130.2440582905.

The spelling of 2209397 in words is "two million, two hundred nine thousand, three hundred ninety-seven".