27222399 has 10 divisors (see below), whose sum is σ = 40665680. Its totient is φ = 18148212.

The previous prime is 27222347. The next prime is 27222463. The reversal of 27222399 is 99322272.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-27222399 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 (27222199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 167959 + ... + 168120.

It is an arithmetic number, because the mean of its divisors is an integer number (4066568).

Almost surely, 2^27222399 is an apocalyptic number.

27222399 is a deficient number, since it is larger than the sum of its proper divisors (13443281).

27222399 is an equidigital number, since it uses as much as digits as its factorization.

27222399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336091 (or 336082 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 27222399 is about 5217.5088883489. The cubic root of 27222399 is about 300.8214486872.

The spelling of 27222399 in words is "twenty-seven million, two hundred twenty-two thousand, three hundred ninety-nine".