222448729 has 2 divisors, whose sum is σ = 222448730. Its totient is φ = 222448728.

The previous prime is 222448717. The next prime is 222448741. The reversal of 222448729 is 927844222.

It is a balanced prime because it is at equal distance from previous prime (222448717) and next prime (222448741).

It can be written as a sum of positive squares in only one way, i.e., 221325129 + 1123600 = 14877^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 222448729 - 2¹⁵ = 222415961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222448691 and 222448700.

It is not a weakly prime, because it can be changed into another prime (222448769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111224364 + 111224365.

It is an arithmetic number, because the mean of its divisors is an integer number (111224365).

Almost surely, 2^222448729 is an apocalyptic number.

It is an amenable number.

222448729 is a deficient number, since it is larger than the sum of its proper divisors (1).

222448729 is an equidigital number, since it uses as much as digits as its factorization.

222448729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 40.

The square root of 222448729 is about 14914.7151833349. The cubic root of 222448729 is about 605.9125894611.

The spelling of 222448729 in words is "two hundred twenty-two million, four hundred forty-eight thousand, seven hundred twenty-nine".