4220491 has 4 divisors (see below), whose sum is σ = 4604184. Its totient is φ = 3836800.

The previous prime is 4220483. The next prime is 4220497. The reversal of 4220491 is 1940224.

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

It is not a de Polignac number, because 4220491 - 2³ = 4220483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4220497) 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, 191830 + ... + 191851.

It is an arithmetic number, because the mean of its divisors is an integer number (1151046).

Almost surely, 2^4220491 is an apocalyptic number.

4220491 is a deficient number, since it is larger than the sum of its proper divisors (383693).

4220491 is a wasteful number, since it uses less digits than its factorization.

4220491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383692.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 4220491 is about 2054.3833624716. The cubic root of 4220491 is about 161.6048260780.

The spelling of 4220491 in words is "four million, two hundred twenty thousand, four hundred ninety-one".