1299117994 has 8 divisors (see below), whose sum is σ = 1951921188. Its totient is φ = 648477600.

The previous prime is 1299117983. The next prime is 1299117997. The reversal of 1299117994 is 4997119921.

It can be written as a sum of positive squares in 2 ways, for example, as 1119906225 + 179211769 = 33465^2 + 13387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1299117997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539197 + ... + 541600.

Almost surely, 2^1299117994 is an apocalyptic number.

1299117994 is a deficient number, since it is larger than the sum of its proper divisors (652803194).

1299117994 is a wasteful number, since it uses less digits than its factorization.

1299117994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081400.

The product of its digits is 367416, while the sum is 52.

The square root of 1299117994 is about 36043.2794567864. The cubic root of 1299117994 is about 1091.1460028422.

The spelling of 1299117994 in words is "one billion, two hundred ninety-nine million, one hundred seventeen thousand, nine hundred ninety-four".