4022091 has 24 divisors (see below), whose sum is σ = 6269120. Its totient is φ = 2476656.

The previous prime is 4022087. The next prime is 4022099. The reversal of 4022091 is 1902204.

It is not a de Polignac number, because 4022091 - 2² = 4022087 is a prime.

It is a Duffinian number.

4022091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4022099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7080 + ... + 7626.

Almost surely, 2^4022091 is an apocalyptic number.

4022091 is a deficient number, since it is larger than the sum of its proper divisors (2247029).

4022091 is a wasteful number, since it uses less digits than its factorization.

4022091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 612 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4022091 is about 2005.5151457917. The cubic root of 4022091 is about 159.0317961806.

Adding to 4022091 its reverse (1902204), we get a palindrome (5924295).

The spelling of 4022091 in words is "four million, twenty-two thousand, ninety-one".