2238689 has 4 divisors (see below), whose sum is σ = 2242224. Its totient is φ = 2235156.

The previous prime is 2238673. The next prime is 2238703. The reversal of 2238689 is 9868322.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9868322 = 2 ⋅4934161.

It is a cyclic number.

It is not a de Polignac number, because 2238689 - 2⁴ = 2238673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2238619) 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, 527 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (560556).

2^2238689 is an apocalyptic number.

It is an amenable number.

2238689 is a deficient number, since it is larger than the sum of its proper divisors (3535).

2238689 is an equidigital number, since it uses as much as digits as its factorization.

2238689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534.

The product of its digits is 41472, while the sum is 38.

The square root of 2238689 is about 1496.2249162476. The cubic root of 2238689 is about 130.8171214265.

It can be divided in two parts, 22 and 38689, that multiplied together give a palindrome (851158).

The spelling of 2238689 in words is "two million, two hundred thirty-eight thousand, six hundred eighty-nine".