117741979 has 2 divisors, whose sum is σ = 117741980. Its totient is φ = 117741978.

The previous prime is 117741977. The next prime is 117741989. The reversal of 117741979 is 979147711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117741979 - 2¹ = 117741977 is a prime.

Together with 117741977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (117741971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58870989 + 58870990.

It is an arithmetic number, because the mean of its divisors is an integer number (58870990).

Almost surely, 2^117741979 is an apocalyptic number.

117741979 is a deficient number, since it is larger than the sum of its proper divisors (1).

117741979 is an equidigital number, since it uses as much as digits as its factorization.

117741979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111132, while the sum is 46.

The square root of 117741979 is about 10850.8976126402. The cubic root of 117741979 is about 490.1290497247.

The spelling of 117741979 in words is "one hundred seventeen million, seven hundred forty-one thousand, nine hundred seventy-nine".