1389418 has 8 divisors (see below), whose sum is σ = 2095200. Its totient is φ = 691020.

The previous prime is 1389403. The next prime is 1389431. The reversal of 1389418 is 8149831.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (261900).

2^1389418 is an apocalyptic number.

1389418 is a deficient number, since it is larger than the sum of its proper divisors (705782).

1389418 is a wasteful number, since it uses less digits than its factorization.

1389418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3692.

The product of its digits is 6912, while the sum is 34.

The square root of 1389418 is about 1178.7357634347. The cubic root of 1389418 is about 111.5863247247.

The spelling of 1389418 in words is "one million, three hundred eighty-nine thousand, four hundred eighteen".