1299668994 has 24 divisors (see below), whose sum is σ = 3032561532. Its totient is φ = 399898080.

The previous prime is 1299668969. The next prime is 1299669001. The reversal of 1299668994 is 4998669921.

It can be written as a sum of positive squares in 2 ways, for example, as 1238124969 + 61544025 = 35187^2 + 7845^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2776837 + ... + 2777304.

Almost surely, 2^1299668994 is an apocalyptic number.

1299668994 is an abundant number, since it is smaller than the sum of its proper divisors (1732892538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299668994 is a wasteful number, since it uses less digits than its factorization.

1299668994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554162 (or 5554159 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 63.

The square root of 1299668994 is about 36050.9222350830. The cubic root of 1299668994 is about 1091.3002450462.

The spelling of 1299668994 in words is "one billion, two hundred ninety-nine million, six hundred sixty-eight thousand, nine hundred ninety-four".