222689393 has 2 divisors, whose sum is σ = 222689394. Its totient is φ = 222689392.

The previous prime is 222689377. The next prime is 222689413. The reversal of 222689393 is 393986222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 100962304 = 11033^2 + 10048^2 .

It is a cyclic number.

It is not a de Polignac number, because 222689393 - 2⁴ = 222689377 is a prime.

It is not a weakly prime, because it can be changed into another prime (222689693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111344696 + 111344697.

It is an arithmetic number, because the mean of its divisors is an integer number (111344697).

Almost surely, 2^222689393 is an apocalyptic number.

It is an amenable number.

222689393 is a deficient number, since it is larger than the sum of its proper divisors (1).

222689393 is an equidigital number, since it uses as much as digits as its factorization.

222689393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 222689393 is about 14922.7810075736. The cubic root of 222689393 is about 606.1310200067.

It can be divided in two parts, 2226 and 89393, that added together give a palindrome (91619).

The spelling of 222689393 in words is "two hundred twenty-two million, six hundred eighty-nine thousand, three hundred ninety-three".