40422223 has 2 divisors, whose sum is σ = 40422224. Its totient is φ = 40422222.

The previous prime is 40422211. The next prime is 40422229. The reversal of 40422223 is 32222404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40422223 is a prime.

It is a super-2 number, since 2×40422223² = 3267912224523458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40422223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40422229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20211111 + 20211112.

It is an arithmetic number, because the mean of its divisors is an integer number (20211112).

Almost surely, 2^40422223 is an apocalyptic number.

40422223 is a deficient number, since it is larger than the sum of its proper divisors (1).

40422223 is an equidigital number, since it uses as much as digits as its factorization.

40422223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 40422223 is about 6357.8473558273. The cubic root of 40422223 is about 343.1942987074.

Adding to 40422223 its reverse (32222404), we get a palindrome (72644627).

The spelling of 40422223 in words is "forty million, four hundred twenty-two thousand, two hundred twenty-three".