222681479 has 2 divisors, whose sum is σ = 222681480. Its totient is φ = 222681478.

The previous prime is 222681449. The next prime is 222681491. The reversal of 222681479 is 974186222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222681479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222681409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111340739 + 111340740.

It is an arithmetic number, because the mean of its divisors is an integer number (111340740).

Almost surely, 2^222681479 is an apocalyptic number.

222681479 is a deficient number, since it is larger than the sum of its proper divisors (1).

222681479 is an equidigital number, since it uses as much as digits as its factorization.

222681479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 222681479 is about 14922.5158401658. The cubic root of 222681479 is about 606.1238396352.

The spelling of 222681479 in words is "two hundred twenty-two million, six hundred eighty-one thousand, four hundred seventy-nine".