1279316407 has 2 divisors, whose sum is σ = 1279316408. Its totient is φ = 1279316406.

The previous prime is 1279316383. The next prime is 1279316471. The reversal of 1279316407 is 7046139721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1279316407 - 2¹¹ = 1279314359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1279316407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1279316497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639658203 + 639658204.

It is an arithmetic number, because the mean of its divisors is an integer number (639658204).

Almost surely, 2^1279316407 is an apocalyptic number.

1279316407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279316407 is an equidigital number, since it uses as much as digits as its factorization.

1279316407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1279316407 is about 35767.5328615212. The cubic root of 1279316407 is about 1085.5737250438.

The spelling of 1279316407 in words is "one billion, two hundred seventy-nine million, three hundred sixteen thousand, four hundred seven".