2223406 has 4 divisors (see below), whose sum is σ = 3335112. Its totient is φ = 1111702.

The previous prime is 2223391. The next prime is 2223407. The reversal of 2223406 is 6043222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6043222 = 2 ⋅3021611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555850 + ... + 555853.

It is an arithmetic number, because the mean of its divisors is an integer number (833778).

2^2223406 is an apocalyptic number.

2223406 is a deficient number, since it is larger than the sum of its proper divisors (1111706).

2223406 is a wasteful number, since it uses less digits than its factorization.

2223406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111705.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2223406 is about 1491.1089832739. The cubic root of 2223406 is about 130.5187555922.

Adding to 2223406 its reverse (6043222), we get a palindrome (8266628).

The spelling of 2223406 in words is "two million, two hundred twenty-three thousand, four hundred six".