1299969 has 20 divisors (see below), whose sum is σ = 2119920. Its totient is φ = 787320.

The previous prime is 1299953. The next prime is 1299979. The reversal of 1299969 is 9699921.

It is a happy number.

It is not a de Polignac number, because 1299969 - 2⁴ = 1299953 is a prime.

It is a super-2 number, since 2×1299969² = 3379838801922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1299919) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 162 + ... + 1620.

It is an arithmetic number, because the mean of its divisors is an integer number (105996).

2^1299969 is an apocalyptic number.

It is an amenable number.

1299969 is a deficient number, since it is larger than the sum of its proper divisors (819951).

1299969 is a wasteful number, since it uses less digits than its factorization.

1299969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482 (or 1473 counting only the distinct ones).

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

The square root of 1299969 is about 1140.1618306188. The cubic root of 1299969 is about 109.1384207818.

The spelling of 1299969 in words is "one million, two hundred ninety-nine thousand, nine hundred sixty-nine".