4022491 has 8 divisors (see below), whose sum is σ = 4402944. Its totient is φ = 3644520.

The previous prime is 4022483. The next prime is 4022507. The reversal of 4022491 is 1942204.

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

It is not a de Polignac number, because 4022491 - 2³ = 4022483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4022441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5170 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^4022491 is an apocalyptic number.

4022491 is a deficient number, since it is larger than the sum of its proper divisors (380453).

4022491 is a wasteful number, since it uses less digits than its factorization.

4022491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241.

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

The square root of 4022491 is about 2005.6148683135. The cubic root of 4022491 is about 159.0370679500.

Adding to 4022491 its reverse (1942204), we get a palindrome (5964695).

The spelling of 4022491 in words is "four million, twenty-two thousand, four hundred ninety-one".