1279801307 has 2 divisors, whose sum is σ = 1279801308. Its totient is φ = 1279801306.

The previous prime is 1279801277. The next prime is 1279801309. The reversal of 1279801307 is 7031089721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1279801307 - 2⁸ = 1279801051 is a prime.

Together with 1279801309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1279801309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639900653 + 639900654.

It is an arithmetic number, because the mean of its divisors is an integer number (639900654).

Almost surely, 2^1279801307 is an apocalyptic number.

1279801307 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279801307 is an equidigital number, since it uses as much as digits as its factorization.

1279801307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 1279801307 is about 35774.3107131360. The cubic root of 1279801307 is about 1085.7108629204.

The spelling of 1279801307 in words is "one billion, two hundred seventy-nine million, eight hundred one thousand, three hundred seven".