1299899 has 2 divisors, whose sum is σ = 1299900. Its totient is φ = 1299898.

The previous prime is 1299887. The next prime is 1299917. The reversal of 1299899 is 9989921.

It is a weak prime.

It is an emirp because it is prime and its reverse (9989921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1299899 - 2¹² = 1295803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1299869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649949 + 649950.

It is an arithmetic number, because the mean of its divisors is an integer number (649950).

2^1299899 is an apocalyptic number.

1299899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299899 is an equidigital number, since it uses as much as digits as its factorization.

1299899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 47.

The square root of 1299899 is about 1140.1311328089. The cubic root of 1299899 is about 109.1364618052.

The spelling of 1299899 in words is "one million, two hundred ninety-nine thousand, eight hundred ninety-nine".