1299963 has 16 divisors (see below), whose sum is σ = 2003456. Its totient is φ = 734400.

The previous prime is 1299953. The next prime is 1299979. The reversal of 1299963 is 3699921.

It is a happy number.

It is not a de Polignac number, because 1299963 - 2⁶ = 1299899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1299953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1863 + ... + 2463.

It is an arithmetic number, because the mean of its divisors is an integer number (125216).

2^1299963 is an apocalyptic number.

1299963 is a deficient number, since it is larger than the sum of its proper divisors (703493).

1299963 is a wasteful number, since it uses less digits than its factorization.

1299963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714.

The product of its digits is 26244, while the sum is 39.

The square root of 1299963 is about 1140.1591994103. The cubic root of 1299963 is about 109.1382528723.

The spelling of 1299963 in words is "one million, two hundred ninety-nine thousand, nine hundred sixty-three".