222446729 has 2 divisors, whose sum is σ = 222446730. Its totient is φ = 222446728.

The previous prime is 222446713. The next prime is 222446747. The reversal of 222446729 is 927644222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208369225 + 14077504 = 14435^2 + 3752^2 .

It is a cyclic number.

It is not a de Polignac number, because 222446729 - 2⁴ = 222446713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222446692 and 222446701.

It is not a weakly prime, because it can be changed into another prime (222446759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111223364 + 111223365.

It is an arithmetic number, because the mean of its divisors is an integer number (111223365).

Almost surely, 2^222446729 is an apocalyptic number.

It is an amenable number.

222446729 is a deficient number, since it is larger than the sum of its proper divisors (1).

222446729 is an equidigital number, since it uses as much as digits as its factorization.

222446729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 38.

The square root of 222446729 is about 14914.6481353064. The cubic root of 222446729 is about 605.9107735688.

The spelling of 222446729 in words is "two hundred twenty-two million, four hundred forty-six thousand, seven hundred twenty-nine".