1386899 has 4 divisors (see below), whose sum is σ = 1390536. Its totient is φ = 1383264.

The previous prime is 1386883. The next prime is 1386901. The reversal of 1386899 is 9986831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1386899 - 2⁴ = 1386883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1386839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1169 + ... + 2034.

It is an arithmetic number, because the mean of its divisors is an integer number (347634).

2^1386899 is an apocalyptic number.

1386899 is a deficient number, since it is larger than the sum of its proper divisors (3637).

1386899 is an equidigital number, since it uses as much as digits as its factorization.

1386899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636.

The product of its digits is 93312, while the sum is 44.

The square root of 1386899 is about 1177.6667610152. Note that the first 3 decimals coincide. The cubic root of 1386899 is about 111.5188489922.

The spelling of 1386899 in words is "one million, three hundred eighty-six thousand, eight hundred ninety-nine".