1329899 has 2 divisors, whose sum is σ = 1329900. Its totient is φ = 1329898.

The previous prime is 1329871. The next prime is 1329907. The reversal of 1329899 is 9989231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1329899 - 2¹² = 1325803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1329499) 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 as a sum of consecutive naturals, namely, 664949 + 664950.

It is an arithmetic number, because the mean of its divisors is an integer number (664950).

2^1329899 is an apocalyptic number.

1329899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1329899 is an equidigital number, since it uses as much as digits as its factorization.

1329899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 1329899 is about 1153.2124695823. The cubic root of 1329899 is about 109.9696610545.

The spelling of 1329899 in words is "one million, three hundred twenty-nine thousand, eight hundred ninety-nine".