1279655097 has 16 divisors (see below), whose sum is σ = 1950453120. Its totient is φ = 731043072.

The previous prime is 1279655089. The next prime is 1279655099. The reversal of 1279655097 is 7905569721.

It is not a de Polignac number, because 1279655097 - 2³ = 1279655089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1279655099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142929 + ... + 151617.

It is an arithmetic number, because the mean of its divisors is an integer number (121903320).

Almost surely, 2^1279655097 is an apocalyptic number.

It is an amenable number.

1279655097 is a deficient number, since it is larger than the sum of its proper divisors (670798023).

1279655097 is an equidigital number, since it uses as much as digits as its factorization.

1279655097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712.

The product of its (nonzero) digits is 1190700, while the sum is 51.

The square root of 1279655097 is about 35772.2671492876. The cubic root of 1279655097 is about 1085.6695159212.

The spelling of 1279655097 in words is "one billion, two hundred seventy-nine million, six hundred fifty-five thousand, ninety-seven".