2219947 has 2 divisors, whose sum is σ = 2219948. Its totient is φ = 2219946.

The previous prime is 2219939. The next prime is 2219953. The reversal of 2219947 is 7499122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2219947 - 2³ = 2219939 is a prime.

It is not a weakly prime, because it can be changed into another prime (2219977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109973 + 1109974.

It is an arithmetic number, because the mean of its divisors is an integer number (1109974).

2^2219947 is an apocalyptic number.

2219947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219947 is an equidigital number, since it uses as much as digits as its factorization.

2219947 is an evil number, because the sum of its binary digits is even.

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

The square root of 2219947 is about 1489.9486568335. The cubic root of 2219947 is about 130.4510368617.

It can be divided in two parts, 22 and 19947, that multiplied together give a palindrome (438834).

The spelling of 2219947 in words is "two million, two hundred nineteen thousand, nine hundred forty-seven".