1279962097 has 2 divisors, whose sum is σ = 1279962098. Its totient is φ = 1279962096.

The previous prime is 1279962077. The next prime is 1279962119. The reversal of 1279962097 is 7902699721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 888278416 + 391683681 = 29804^2 + 19791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1279962097 - 2²³ = 1271573489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1279962017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639981048 + 639981049.

It is an arithmetic number, because the mean of its divisors is an integer number (639981049).

Almost surely, 2^1279962097 is an apocalyptic number.

It is an amenable number.

1279962097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1279962097 is an equidigital number, since it uses as much as digits as its factorization.

1279962097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 1279962097 is about 35776.5579255467. The cubic root of 1279962097 is about 1085.7563293894.

The spelling of 1279962097 in words is "one billion, two hundred seventy-nine million, nine hundred sixty-two thousand, ninety-seven".