222298399 has 2 divisors, whose sum is σ = 222298400. Its totient is φ = 222298398.

The previous prime is 222298379. The next prime is 222298403. The reversal of 222298399 is 993892222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222298399 - 2⁵ = 222298367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222298339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111149199 + 111149200.

It is an arithmetic number, because the mean of its divisors is an integer number (111149200).

Almost surely, 2^222298399 is an apocalyptic number.

222298399 is a deficient number, since it is larger than the sum of its proper divisors (1).

222298399 is an equidigital number, since it uses as much as digits as its factorization.

222298399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 46.

The square root of 222298399 is about 14909.6746778728. The cubic root of 222298399 is about 605.7760675663.

It can be divided in two parts, 22229 and 8399, that added together give a triangular number (30628 = T₂₄₇).

The spelling of 222298399 in words is "two hundred twenty-two million, two hundred ninety-eight thousand, three hundred ninety-nine".