4221694 has 4 divisors (see below), whose sum is σ = 6332544. Its totient is φ = 2110846.

The previous prime is 4221691. The next prime is 4221703. The reversal of 4221694 is 4961224.

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

It is a d-powerful number, because it can be written as 4⁷ + 2¹¹ + 2¹³ + 1 + 6² + 9³ + 4¹¹ .

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055422 + ... + 1055425.

It is an arithmetic number, because the mean of its divisors is an integer number (1583136).

Almost surely, 2^4221694 is an apocalyptic number.

4221694 is a deficient number, since it is larger than the sum of its proper divisors (2110850).

4221694 is a wasteful number, since it uses less digits than its factorization.

4221694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110849.

The product of its digits is 3456, while the sum is 28.

The square root of 4221694 is about 2054.6761301967. The cubic root of 4221694 is about 161.6201791208.

It can be divided in two parts, 422 and 1694, that added together give a square (2116 = 46²).

The spelling of 4221694 in words is "four million, two hundred twenty-one thousand, six hundred ninety-four".