2238409 has 4 divisors (see below), whose sum is σ = 2356240. Its totient is φ = 2120580.

The previous prime is 2238391. The next prime is 2238413. The reversal of 2238409 is 9048322.

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 2238409 - 2⁵ = 2238377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2238419) 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, 58887 + ... + 58924.

It is an arithmetic number, because the mean of its divisors is an integer number (589060).

2^2238409 is an apocalyptic number.

It is an amenable number.

2238409 is a deficient number, since it is larger than the sum of its proper divisors (117831).

2238409 is a wasteful number, since it uses less digits than its factorization.

2238409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117830.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2238409 is about 1496.1313445015. The cubic root of 2238409 is about 130.8116672937.

The spelling of 2238409 in words is "two million, two hundred thirty-eight thousand, four hundred nine".