4098085 has 4 divisors (see below), whose sum is σ = 4917708. Its totient is φ = 3278464.

The previous prime is 4098079. The next prime is 4098089. The reversal of 4098085 is 5808904.

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 3094081 + 1004004 = 1759^2 + 1002^2 .

It is a cyclic number.

It is not a de Polignac number, because 4098085 - 2⁷ = 4097957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4098085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4098089) 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, 409804 + ... + 409813.

It is an arithmetic number, because the mean of its divisors is an integer number (1229427).

Almost surely, 2^4098085 is an apocalyptic number.

It is an amenable number.

4098085 is a deficient number, since it is larger than the sum of its proper divisors (819623).

4098085 is an equidigital number, since it uses as much as digits as its factorization.

4098085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819622.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 4098085 is about 2024.3727423575. The cubic root of 4098085 is about 160.0271438323.

The spelling of 4098085 in words is "four million, ninety-eight thousand, eighty-five".