22227409 has 2 divisors, whose sum is σ = 22227410. Its totient is φ = 22227408.

The previous prime is 22227391. The next prime is 22227421. The reversal of 22227409 is 90472222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11370384 + 10857025 = 3372^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 22227409 - 2⁵ = 22227377 is a prime.

It is not a weakly prime, because it can be changed into another prime (22227209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113704 + 11113705.

It is an arithmetic number, because the mean of its divisors is an integer number (11113705).

Almost surely, 2^22227409 is an apocalyptic number.

It is an amenable number.

22227409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22227409 is an equidigital number, since it uses as much as digits as its factorization.

22227409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 22227409 is about 4714.5953166735. The cubic root of 22227409 is about 281.1660935547.

The spelling of 22227409 in words is "twenty-two million, two hundred twenty-seven thousand, four hundred nine".