1366899 has 8 divisors (see below), whose sum is σ = 1867152. Its totient is φ = 888960.

The previous prime is 1366889. The next prime is 1366903. The reversal of 1366899 is 9986631.

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

It is not a de Polignac number, because 1366899 - 2⁸ = 1366643 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1366899.

It is not an unprimeable number, because it can be changed into a prime (1366829) by changing a digit.

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, 5434 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (233394).

2^1366899 is an apocalyptic number.

1366899 is a deficient number, since it is larger than the sum of its proper divisors (500253).

1366899 is a wasteful number, since it uses less digits than its factorization.

1366899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157.

The product of its digits is 69984, while the sum is 42.

The square root of 1366899 is about 1169.1445590687. The cubic root of 1366899 is about 110.9801928784.

The spelling of 1366899 in words is "one million, three hundred sixty-six thousand, eight hundred ninety-nine".