4085389 has 16 divisors (see below), whose sum is σ = 5394816. Its totient is φ = 2995200.

The previous prime is 4085383. The next prime is 4085401. The reversal of 4085389 is 9835804.

4085389 = 330² + 331² + ... + 363².

It is a cyclic number.

It is not a de Polignac number, because 4085389 - 2⁵ = 4085357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4085383) 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 15 ways as a sum of consecutive naturals, for example, 252 + ... + 2869.

It is an arithmetic number, because the mean of its divisors is an integer number (337176).

Almost surely, 2^4085389 is an apocalyptic number.

It is an amenable number.

4085389 is a deficient number, since it is larger than the sum of its proper divisors (1309427).

4085389 is a wasteful number, since it uses less digits than its factorization.

4085389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 4085389 is about 2021.2345237503. The cubic root of 4085389 is about 159.8617164573.

The spelling of 4085389 in words is "four million, eighty-five thousand, three hundred eighty-nine".