4021089 has 4 divisors (see below), whose sum is σ = 5361456. Its totient is φ = 2680724.

The previous prime is 4021081. The next prime is 4021091. The reversal of 4021089 is 9801204.

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 4021089 - 2³ = 4021081 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4021081) 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 3 ways as a sum of consecutive naturals, for example, 670179 + ... + 670184.

It is an arithmetic number, because the mean of its divisors is an integer number (1340364).

Almost surely, 2^4021089 is an apocalyptic number.

It is an amenable number.

4021089 is a deficient number, since it is larger than the sum of its proper divisors (1340367).

4021089 is a wasteful number, since it uses less digits than its factorization.

4021089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340366.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 4021089 is about 2005.2653191037. The cubic root of 4021089 is about 159.0185888634.

The spelling of 4021089 in words is "four million, twenty-one thousand, eighty-nine".