1299669001 has 2 divisors, whose sum is σ = 1299669002. Its totient is φ = 1299669000.

The previous prime is 1299668969. The next prime is 1299669011. The reversal of 1299669001 is 1009669921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1204020601 + 95648400 = 34699^2 + 9780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299669001 - 2⁵ = 1299668969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1299669011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649834500 + 649834501.

It is an arithmetic number, because the mean of its divisors is an integer number (649834501).

Almost surely, 2^1299669001 is an apocalyptic number.

It is an amenable number.

1299669001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299669001 is an equidigital number, since it uses as much as digits as its factorization.

1299669001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 1299669001 is about 36050.9223321679. The cubic root of 1299669001 is about 1091.3002470054.

The spelling of 1299669001 in words is "one billion, two hundred ninety-nine million, six hundred sixty-nine thousand, one".