1399366 has 16 divisors (see below), whose sum is σ = 2268000. Its totient is φ = 645568.

The previous prime is 1399361. The next prime is 1399367. The reversal of 1399366 is 6639931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 810 + ... + 1858.

It is an arithmetic number, because the mean of its divisors is an integer number (141750).

2^1399366 is an apocalyptic number.

1399366 is a deficient number, since it is larger than the sum of its proper divisors (868634).

1399366 is a wasteful number, since it uses less digits than its factorization.

1399366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103.

The product of its digits is 26244, while the sum is 37.

The square root of 1399366 is about 1182.9480123826. The cubic root of 1399366 is about 111.8520047824.

The spelling of 1399366 in words is "one million, three hundred ninety-nine thousand, three hundred sixty-six".