117757949 has 2 divisors, whose sum is σ = 117757950. Its totient is φ = 117757948.

The previous prime is 117757931. The next prime is 117757957. The reversal of 117757949 is 949757711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115713049 + 2044900 = 10757^2 + 1430^2 .

It is a cyclic number.

It is not a de Polignac number, because 117757949 - 2¹⁶ = 117692413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117757897 and 117757906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117757909) 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 as a sum of consecutive naturals, namely, 58878974 + 58878975.

It is an arithmetic number, because the mean of its divisors is an integer number (58878975).

Almost surely, 2^117757949 is an apocalyptic number.

It is an amenable number.

117757949 is a deficient number, since it is larger than the sum of its proper divisors (1).

117757949 is an equidigital number, since it uses as much as digits as its factorization.

117757949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 50.

The square root of 117757949 is about 10851.6334715102. The cubic root of 117757949 is about 490.1512083667.

The spelling of 117757949 in words is "one hundred seventeen million, seven hundred fifty-seven thousand, nine hundred forty-nine".