222894405 has 12 divisors (see below), whose sum is σ = 386350380. Its totient is φ = 118876992.

The previous prime is 222894383. The next prime is 222894431. The reversal of 222894405 is 504498222.

It can be written as a sum of positive squares in 2 ways, for example, as 24591681 + 198302724 = 4959^2 + 14082^2 .

It is not a de Polignac number, because 222894405 - 2¹⁹ = 222370117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222894405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2476560 + ... + 2476649.

It is an arithmetic number, because the mean of its divisors is an integer number (32195865).

Almost surely, 2^222894405 is an apocalyptic number.

It is an amenable number.

222894405 is a deficient number, since it is larger than the sum of its proper divisors (163455975).

222894405 is a wasteful number, since it uses less digits than its factorization.

222894405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953220 (or 4953217 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 222894405 is about 14929.6485223196. The cubic root of 222894405 is about 606.3169681221.

The spelling of 222894405 in words is "two hundred twenty-two million, eight hundred ninety-four thousand, four hundred five".