1299445907 has 2 divisors, whose sum is σ = 1299445908. Its totient is φ = 1299445906.

The previous prime is 1299445831. The next prime is 1299445919. The reversal of 1299445907 is 7095449921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299445907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299415907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649722953 + 649722954.

It is an arithmetic number, because the mean of its divisors is an integer number (649722954).

Almost surely, 2^1299445907 is an apocalyptic number.

1299445907 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299445907 is an equidigital number, since it uses as much as digits as its factorization.

1299445907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 1299445907 is about 36047.8280483027. The cubic root of 1299445907 is about 1091.2378012420.

The spelling of 1299445907 in words is "one billion, two hundred ninety-nine million, four hundred forty-five thousand, nine hundred seven".