222406403 has 4 divisors (see below), whose sum is σ = 223377840. Its totient is φ = 221434968.

The previous prime is 222406367. The next prime is 222406411. The reversal of 222406403 is 304604222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222406403 - 2⁶ = 222406339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222406453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485375 + ... + 485832.

It is an arithmetic number, because the mean of its divisors is an integer number (55844460).

Almost surely, 2^222406403 is an apocalyptic number.

222406403 is a deficient number, since it is larger than the sum of its proper divisors (971437).

222406403 is an equidigital number, since it uses as much as digits as its factorization.

222406403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971436.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 222406403 is about 14913.2961815958. The cubic root of 222406403 is about 605.8741574097.

The spelling of 222406403 in words is "two hundred twenty-two million, four hundred six thousand, four hundred three".