1197194879 has 2 divisors, whose sum is σ = 1197194880. Its totient is φ = 1197194878.

The previous prime is 1197194861. The next prime is 1197194881. The reversal of 1197194879 is 9784917911.

It is a strong prime.

It is an emirp because it is prime and its reverse (9784917911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1197194879 - 2⁸ = 1197194623 is a prime.

It is a Sophie Germain prime.

Together with 1197194881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1197194819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598597439 + 598597440.

It is an arithmetic number, because the mean of its divisors is an integer number (598597440).

Almost surely, 2^1197194879 is an apocalyptic number.

1197194879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197194879 is an equidigital number, since it uses as much as digits as its factorization.

1197194879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 56.

The square root of 1197194879 is about 34600.5040281207. The cubic root of 1197194879 is about 1061.8298992947.

The spelling of 1197194879 in words is "one billion, one hundred ninety-seven million, one hundred ninety-four thousand, eight hundred seventy-nine".