1299699 has 16 divisors (see below), whose sum is σ = 1979040. Its totient is φ = 842400.

The previous prime is 1299689. The next prime is 1299709. The reversal of 1299699 is 9969921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1299689) and next prime (1299709).

It is not a de Polignac number, because 1299699 - 2⁹ = 1299187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1299689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (123690).

2^1299699 is an apocalyptic number.

1299699 is a deficient number, since it is larger than the sum of its proper divisors (679341).

1299699 is a wasteful number, since it uses less digits than its factorization.

1299699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347 (or 1341 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 1299699 is about 1140.0434202257. The cubic root of 1299699 is about 109.1308643416.

The spelling of 1299699 in words is "one million, two hundred ninety-nine thousand, six hundred ninety-nine".