222404409 has 12 divisors (see below), whose sum is σ = 321604452. Its totient is φ = 148106400.

The previous prime is 222404407. The next prime is 222404477. The reversal of 222404409 is 904404222.

It can be written as a sum of positive squares in 2 ways, for example, as 49744809 + 172659600 = 7053^2 + 13140^2 .

It is not a de Polignac number, because 222404409 - 2¹ = 222404407 is a prime.

It is a super-2 number, since 2×222404409² = 98927442285278562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222404407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4662 + ... + 21599.

It is an arithmetic number, because the mean of its divisors is an integer number (26800371).

Almost surely, 2^222404409 is an apocalyptic number.

It is an amenable number.

222404409 is a deficient number, since it is larger than the sum of its proper divisors (99200043).

222404409 is a wasteful number, since it uses less digits than its factorization.

222404409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27208 (or 27205 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 222404409 is about 14913.2293283514. The cubic root of 222404409 is about 605.8723467354.

The spelling of 222404409 in words is "two hundred twenty-two million, four hundred four thousand, four hundred nine".