1343999 has 4 divisors (see below), whose sum is σ = 1348200. Its totient is φ = 1339800.

The previous prime is 1343987. The next prime is 1344011. The reversal of 1343999 is 9993431.

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 (1343987) and next prime (1344011).

It is a cyclic number.

It is not a de Polignac number, because 1343999 - 2⁴ = 1343983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343299) 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, 1577 + ... + 2274.

It is an arithmetic number, because the mean of its divisors is an integer number (337050).

2^1343999 is an apocalyptic number.

1343999 is a deficient number, since it is larger than the sum of its proper divisors (4201).

1343999 is an equidigital number, since it uses as much as digits as its factorization.

1343999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4200.

The product of its digits is 26244, while the sum is 38.

The square root of 1343999 is about 1159.3097084041. The cubic root of 1343999 is about 110.3569396850.

The spelling of 1343999 in words is "one million, three hundred forty-three thousand, nine hundred ninety-nine".