4221437 has 4 divisors (see below), whose sum is σ = 4605216. Its totient is φ = 3837660.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221437 is 7341224.

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 4221437 - 2² = 4221433 is a prime.

It is a d-powerful number, because it can be written as 4⁷ + 2⁷ + 2¹³ + 1 + 4¹¹ + 3³ + 7⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221433) 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, 191873 + ... + 191894.

It is an arithmetic number, because the mean of its divisors is an integer number (1151304).

Almost surely, 2^4221437 is an apocalyptic number.

It is an amenable number.

4221437 is a deficient number, since it is larger than the sum of its proper divisors (383779).

4221437 is a wasteful number, since it uses less digits than its factorization.

4221437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383778.

The product of its digits is 1344, while the sum is 23.

The square root of 4221437 is about 2054.6135889748. The cubic root of 4221437 is about 161.6168994556.

The spelling of 4221437 in words is "four million, two hundred twenty-one thousand, four hundred thirty-seven".