1316999 has 2 divisors, whose sum is σ = 1317000. Its totient is φ = 1316998.

The previous prime is 1316989. The next prime is 1317013. The reversal of 1316999 is 9996131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1316999 - 2⁴ = 1316983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658499 + 658500.

It is an arithmetic number, because the mean of its divisors is an integer number (658500).

2^1316999 is an apocalyptic number.

1316999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316999 is an equidigital number, since it uses as much as digits as its factorization.

1316999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 38.

The square root of 1316999 is about 1147.6057685460. The cubic root of 1316999 is about 109.6129371394.

The spelling of 1316999 in words is "one million, three hundred sixteen thousand, nine hundred ninety-nine".