4185389 has 8 divisors (see below), whose sum is σ = 4535832. Its totient is φ = 3839040.

The previous prime is 4185373. The next prime is 4185409. The reversal of 4185389 is 9835814.

It can be written as a sum of positive squares in 4 ways, for example, as 15625 + 4169764 = 125^2 + 2042^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4185389 - 2⁴ = 4185373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4185359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (566979).

Almost surely, 2^4185389 is an apocalyptic number.

It is an amenable number.

4185389 is a deficient number, since it is larger than the sum of its proper divisors (350443).

4185389 is a wasteful number, since it uses less digits than its factorization.

4185389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its digits is 34560, while the sum is 38.

The square root of 4185389 is about 2045.8223285515. The cubic root of 4185389 is about 161.1555535297.

The spelling of 4185389 in words is "four million, one hundred eighty-five thousand, three hundred eighty-nine".