8418389 has 4 divisors (see below), whose sum is σ = 9621024. Its totient is φ = 7215756.

The previous prime is 8418379. The next prime is 8418409. The reversal of 8418389 is 9838148.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8418389 - 2⁴ = 8418373 is a prime.

It is a super-3 number, since 3×8418389³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8418359) 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, 601307 + ... + 601320.

It is an arithmetic number, because the mean of its divisors is an integer number (2405256).

Almost surely, 2^8418389 is an apocalyptic number.

It is an amenable number.

8418389 is a deficient number, since it is larger than the sum of its proper divisors (1202635).

8418389 is a wasteful number, since it uses less digits than its factorization.

8418389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202634.

The product of its digits is 55296, while the sum is 41.

The square root of 8418389 is about 2901.4460187982. The cubic root of 8418389 is about 203.4275006510.

The spelling of 8418389 in words is "eight million, four hundred eighteen thousand, three hundred eighty-nine".