117172849 has 2 divisors, whose sum is σ = 117172850. Its totient is φ = 117172848.

The previous prime is 117172813. The next prime is 117172859. The reversal of 117172849 is 948271711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88228449 + 28944400 = 9393^2 + 5380^2 .

It is a cyclic number.

It is not a de Polignac number, because 117172849 - 2⁹ = 117172337 is a prime.

It is not a weakly prime, because it can be changed into another prime (117172859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58586424 + 58586425.

It is an arithmetic number, because the mean of its divisors is an integer number (58586425).

Almost surely, 2^117172849 is an apocalyptic number.

It is an amenable number.

117172849 is a deficient number, since it is larger than the sum of its proper divisors (1).

117172849 is an equidigital number, since it uses as much as digits as its factorization.

117172849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 40.

The square root of 117172849 is about 10824.6408254501. The cubic root of 117172849 is about 489.3380607937.

The spelling of 117172849 in words is "one hundred seventeen million, one hundred seventy-two thousand, eight hundred forty-nine".