117724877 has 2 divisors, whose sum is σ = 117724878. Its totient is φ = 117724876.

The previous prime is 117724843. The next prime is 117724889. The reversal of 117724877 is 778427711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112126921 + 5597956 = 10589^2 + 2366^2 .

It is an emirp because it is prime and its reverse (778427711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117724877 - 2¹² = 117720781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117724897) 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, 58862438 + 58862439.

It is an arithmetic number, because the mean of its divisors is an integer number (58862439).

Almost surely, 2^117724877 is an apocalyptic number.

It is an amenable number.

117724877 is a deficient number, since it is larger than the sum of its proper divisors (1).

117724877 is an equidigital number, since it uses as much as digits as its factorization.

117724877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153664, while the sum is 44.

The square root of 117724877 is about 10850.1095386176. The cubic root of 117724877 is about 490.1053181920.

The spelling of 117724877 in words is "one hundred seventeen million, seven hundred twenty-four thousand, eight hundred seventy-seven".