4221679 has 16 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 3252960.

The previous prime is 4221677. The next prime is 4221683. The reversal of 4221679 is 9761224.

It is a cyclic number.

It is not a de Polignac number, because 4221679 - 2¹ = 4221677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4221679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8142 + ... + 8644.

It is an arithmetic number, because the mean of its divisors is an integer number (332640).

Almost surely, 2^4221679 is an apocalyptic number.

4221679 is a deficient number, since it is larger than the sum of its proper divisors (1100561).

4221679 is a wasteful number, since it uses less digits than its factorization.

4221679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630.

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

The square root of 4221679 is about 2054.6724799831. The cubic root of 4221679 is about 161.6199877043.

It can be divided in two parts, 4221 and 679, that added together give a square (4900 = 70²).

The spelling of 4221679 in words is "four million, two hundred twenty-one thousand, six hundred seventy-nine".