1316399 has 8 divisors (see below), whose sum is σ = 1522080. Its totient is φ = 1115136.

The previous prime is 1316389. The next prime is 1316401. The reversal of 1316399 is 9936131.

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

It is a cyclic number.

It is not a de Polignac number, because 1316399 - 2⁸ = 1316143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316389) 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, 434 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (190260).

2^1316399 is an apocalyptic number.

1316399 is a deficient number, since it is larger than the sum of its proper divisors (205681).

1316399 is an equidigital number, since it uses as much as digits as its factorization.

1316399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209.

The product of its digits is 4374, while the sum is 32.

The square root of 1316399 is about 1147.3443249522. The cubic root of 1316399 is about 109.5962887461.

The spelling of 1316399 in words is "one million, three hundred sixteen thousand, three hundred ninety-nine".