2217994 has 4 divisors (see below), whose sum is σ = 3326994. Its totient is φ = 1108996.

The previous prime is 2217991. The next prime is 2218001. The reversal of 2217994 is 4997122.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2205225 + 12769 = 1485^2 + 113^2 .

It is not an unprimeable number, because it can be changed into a prime (2217991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554497 + ... + 554500.

2^2217994 is an apocalyptic number.

2217994 is a deficient number, since it is larger than the sum of its proper divisors (1109000).

2217994 is a wasteful number, since it uses less digits than its factorization.

2217994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108999.

The product of its digits is 9072, while the sum is 34.

The square root of 2217994 is about 1489.2931209134. The cubic root of 2217994 is about 130.4127708395.

The spelling of 2217994 in words is "two million, two hundred seventeen thousand, nine hundred ninety-four".