1399166 has 16 divisors (see below), whose sum is σ = 2183328. Its totient is φ = 672000.

The previous prime is 1399133. The next prime is 1399183. The reversal of 1399166 is 6619931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9191 + ... + 9341.

It is an arithmetic number, because the mean of its divisors is an integer number (136458).

2^1399166 is an apocalyptic number.

1399166 is a deficient number, since it is larger than the sum of its proper divisors (784162).

1399166 is a wasteful number, since it uses less digits than its factorization.

1399166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307.

The product of its digits is 8748, while the sum is 35.

The square root of 1399166 is about 1182.8634747933. The cubic root of 1399166 is about 111.8466758295.

The spelling of 1399166 in words is "one million, three hundred ninety-nine thousand, one hundred sixty-six".