1171213479 has 8 divisors (see below), whose sum is σ = 1735131120. Its totient is φ = 780808968.

The previous prime is 1171213441. The next prime is 1171213499. The reversal of 1171213479 is 9743121711.

1171213479 is a `hidden beast` number, since 1 + 171 + 2 + 13 + 479 = 666.

It is not a de Polignac number, because 1171213479 - 2⁸ = 1171213223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171213499) 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 7 ways as a sum of consecutive naturals, for example, 21689112 + ... + 21689165.

It is an arithmetic number, because the mean of its divisors is an integer number (216891390).

Almost surely, 2^1171213479 is an apocalyptic number.

1171213479 is a deficient number, since it is larger than the sum of its proper divisors (563917641).

1171213479 is an equidigital number, since it uses as much as digits as its factorization.

1171213479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43378286 (or 43378280 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1171213479 is about 34222.9963474854. The cubic root of 1171213479 is about 1054.0924126263.

The spelling of 1171213479 in words is "one billion, one hundred seventy-one million, two hundred thirteen thousand, four hundred seventy-nine".