4219997 has 4 divisors (see below), whose sum is σ = 4248096. Its totient is φ = 4191900.

The previous prime is 4219991. The next prime is 4220039. The reversal of 4219997 is 7999124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4219997 - 2⁴ = 4219981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4219991) 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, 13823 + ... + 14124.

It is an arithmetic number, because the mean of its divisors is an integer number (1062024).

Almost surely, 2^4219997 is an apocalyptic number.

It is an amenable number.

4219997 is a deficient number, since it is larger than the sum of its proper divisors (28099).

4219997 is a wasteful number, since it uses less digits than its factorization.

4219997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28098.

The product of its digits is 40824, while the sum is 41.

The square root of 4219997 is about 2054.2631282287. The cubic root of 4219997 is about 161.5985206585.

The spelling of 4219997 in words is "four million, two hundred nineteen thousand, nine hundred ninety-seven".