1299339946 has 4 divisors (see below), whose sum is σ = 1949009922. Its totient is φ = 649669972.

The previous prime is 1299339941. The next prime is 1299339967. The reversal of 1299339946 is 6499339921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6499339921 = 17 ⋅382314113.

It can be written as a sum of positive squares in only one way, i.e., 1238265721 + 61074225 = 35189^2 + 7815^2 .

It is not an unprimeable number, because it can be changed into a prime (1299339941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324834985 + ... + 324834988.

Almost surely, 2^1299339946 is an apocalyptic number.

1299339946 is a deficient number, since it is larger than the sum of its proper divisors (649669976).

1299339946 is an equidigital number, since it uses as much as digits as its factorization.

1299339946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649669975.

The product of its digits is 2834352, while the sum is 55.

The square root of 1299339946 is about 36046.3582904015. The cubic root of 1299339946 is about 1091.2081394220.

The spelling of 1299339946 in words is "one billion, two hundred ninety-nine million, three hundred thirty-nine thousand, nine hundred forty-six".