4094389 has 4 divisors (see below), whose sum is σ = 4409356. Its totient is φ = 3779424.

The previous prime is 4094369. The next prime is 4094393. The reversal of 4094389 is 9834904.

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 311364 + 3783025 = 558^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 4094389 - 2¹⁵ = 4061621 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 (4094359) 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, 157464 + ... + 157489.

It is an arithmetic number, because the mean of its divisors is an integer number (1102339).

Almost surely, 2^4094389 is an apocalyptic number.

It is an amenable number.

4094389 is a deficient number, since it is larger than the sum of its proper divisors (314967).

4094389 is a wasteful number, since it uses less digits than its factorization.

4094389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314966.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 4094389 is about 2023.4596610756. The cubic root of 4094389 is about 159.9790206868.

The spelling of 4094389 in words is "four million, ninety-four thousand, three hundred eighty-nine".