4020089 has 4 divisors (see below), whose sum is σ = 4027380. Its totient is φ = 4012800.

The previous prime is 4020031. The next prime is 4020119. The reversal of 4020089 is 9800204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3367225 + 652864 = 1835^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020089 - 2⁸ = 4019833 is a prime.

It is a super-2 number, since 2×4020089² = 32322231135842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4020889) 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, 2744 + ... + 3945.

It is an arithmetic number, because the mean of its divisors is an integer number (1006845).

Almost surely, 2^4020089 is an apocalyptic number.

It is an amenable number.

4020089 is a deficient number, since it is larger than the sum of its proper divisors (7291).

4020089 is an equidigital number, since it uses as much as digits as its factorization.

4020089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7290.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 4020089 is about 2005.0159600362. The cubic root of 4020089 is about 159.0054057205.

The spelling of 4020089 in words is "four million, twenty thousand, eighty-nine".