1399683 has 4 divisors (see below), whose sum is σ = 1866248. Its totient is φ = 933120.

The previous prime is 1399679. The next prime is 1399687. The reversal of 1399683 is 3869931.

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

It is an interprime number because it is at equal distance from previous prime (1399679) and next prime (1399687).

It is not a de Polignac number, because 1399683 - 2² = 1399679 is a prime.

It is a super-2 number, since 2×1399683² = 3918225000978, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1399687) 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 3 ways as a sum of consecutive naturals, for example, 233278 + ... + 233283.

It is an arithmetic number, because the mean of its divisors is an integer number (466562).

2^1399683 is an apocalyptic number.

1399683 is a deficient number, since it is larger than the sum of its proper divisors (466565).

1399683 is an equidigital number, since it uses as much as digits as its factorization.

1399683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466564.

The product of its digits is 34992, while the sum is 39.

The square root of 1399683 is about 1183.0819920868. The cubic root of 1399683 is about 111.8604501328.

It can be divided in two parts, 139968 and 3, that multiplied together give a square (419904 = 648²).

The spelling of 1399683 in words is "one million, three hundred ninety-nine thousand, six hundred eighty-three".