2217776394 has 16 divisors (see below), whose sum is σ = 4578635520. Its totient is φ = 715411680.

The previous prime is 2217776389. The next prime is 2217776399. The reversal of 2217776394 is 4936777122.

It is an interprime number because it is at equal distance from previous prime (2217776389) and next prime (2217776399).

It is not an unprimeable number, because it can be changed into a prime (2217776399) 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, 5961579 + ... + 5961950.

It is an arithmetic number, because the mean of its divisors is an integer number (286164720).

Almost surely, 2^2217776394 is an apocalyptic number.

2217776394 is an abundant number, since it is smaller than the sum of its proper divisors (2360859126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217776394 is a wasteful number, since it uses less digits than its factorization.

2217776394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11923565.

The product of its digits is 889056, while the sum is 48.

The square root of 2217776394 is about 47093.2733413170. The cubic root of 2217776394 is about 1304.0850579499.

The spelling of 2217776394 in words is "two billion, two hundred seventeen million, seven hundred seventy-six thousand, three hundred ninety-four".