4221786 has 8 divisors (see below), whose sum is σ = 8443584. Its totient is φ = 1407260.

The previous prime is 4221779. The next prime is 4221787. The reversal of 4221786 is 6871224.

It is a sphenic number, since it is the product of 3 distinct primes.

4221786 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4221787) 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, 351810 + ... + 351821.

It is an arithmetic number, because the mean of its divisors is an integer number (1055448).

Almost surely, 2^4221786 is an apocalyptic number.

4221786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221786 is a wasteful number, since it uses less digits than its factorization.

4221786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703636.

The product of its digits is 5376, while the sum is 30.

The square root of 4221786 is about 2054.6985180313. The cubic root of 4221786 is about 161.6213531320.

The spelling of 4221786 in words is "four million, two hundred twenty-one thousand, seven hundred eighty-six".