4221697 has 4 divisors (see below), whose sum is σ = 4319920. Its totient is φ = 4123476.

The previous prime is 4221691. The next prime is 4221703. The reversal of 4221697 is 7961224.

4221697 is nontrivially palindromic in base 2.

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 an interprime number because it is at equal distance from previous prime (4221691) and next prime (4221703).

It is a cyclic number.

It is not a de Polignac number, because 4221697 - 2¹⁹ = 3697409 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2⁵ + 2¹¹ + 1 + 6⁵ + 9³ + 7⁵ .

It is a Duffinian number.

4221697 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4221691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49047 + ... + 49132.

It is an arithmetic number, because the mean of its divisors is an integer number (1079980).

Almost surely, 2^4221697 is an apocalyptic number.

It is an amenable number.

4221697 is a deficient number, since it is larger than the sum of its proper divisors (98223).

4221697 is an equidigital number, since it uses as much as digits as its factorization.

4221697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98222.

The product of its digits is 6048, while the sum is 31.

The square root of 4221697 is about 2054.6768602386. The cubic root of 4221697 is about 161.6202174040.

The spelling of 4221697 in words is "four million, two hundred twenty-one thousand, six hundred ninety-seven".