2196947 has 4 divisors (see below), whose sum is σ = 2204280. Its totient is φ = 2189616.

The previous prime is 2196941. The next prime is 2196959. The reversal of 2196947 is 7496912.

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 2196947 - 2¹⁰ = 2195923 is a prime.

It is a super-2 number, since 2×2196947² = 9653152241618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2196947.

It is not an unprimeable number, because it can be changed into a prime (2196941) 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, 3197 + ... + 3822.

It is an arithmetic number, because the mean of its divisors is an integer number (551070).

2^2196947 is an apocalyptic number.

2196947 is a deficient number, since it is larger than the sum of its proper divisors (7333).

2196947 is an equidigital number, since it uses as much as digits as its factorization.

2196947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7332.

The product of its digits is 27216, while the sum is 38.

The square root of 2196947 is about 1482.2101740307. The cubic root of 2196947 is about 129.9989546267.

The spelling of 2196947 in words is "two million, one hundred ninety-six thousand, nine hundred forty-seven".