222444399 has 8 divisors (see below), whose sum is σ = 300166272. Its totient is φ = 146509400.

The previous prime is 222444379. The next prime is 222444421. The reversal of 222444399 is 993444222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222444399 - 2⁵ = 222444367 is a prime.

It is a super-3 number, since 3×222444399³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222444379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446427 + ... + 446924.

It is an arithmetic number, because the mean of its divisors is an integer number (37520784).

Almost surely, 2^222444399 is an apocalyptic number.

222444399 is a deficient number, since it is larger than the sum of its proper divisors (77721873).

222444399 is an equidigital number, since it uses as much as digits as its factorization.

222444399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893437.

The product of its digits is 124416, while the sum is 39.

The square root of 222444399 is about 14914.5700239732. The cubic root of 222444399 is about 605.9086580406.

The spelling of 222444399 in words is "two hundred twenty-two million, four hundred forty-four thousand, three hundred ninety-nine".