1399189 has 8 divisors (see below), whose sum is σ = 1535040. Its totient is φ = 1264800.

The previous prime is 1399187. The next prime is 1399193. The reversal of 1399189 is 9819931.

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 1399189 - 2¹ = 1399187 is a prime.

It is a Duffinian number.

1399189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399183) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3217 + ... + 3625.

It is an arithmetic number, because the mean of its divisors is an integer number (191880).

2^1399189 is an apocalyptic number.

It is an amenable number.

1399189 is a deficient number, since it is larger than the sum of its proper divisors (135851).

1399189 is a wasteful number, since it uses less digits than its factorization.

1399189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its digits is 17496, while the sum is 40.

The square root of 1399189 is about 1182.8731969235. The cubic root of 1399189 is about 111.8472886849.

The spelling of 1399189 in words is "one million, three hundred ninety-nine thousand, one hundred eighty-nine".