117849517 has 2 divisors, whose sum is σ = 117849518. Its totient is φ = 117849516.

The previous prime is 117849497. The next prime is 117849577. The reversal of 117849517 is 715948711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72233001 + 45616516 = 8499^2 + 6754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117849517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117849577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58924758 + 58924759.

It is an arithmetic number, because the mean of its divisors is an integer number (58924759).

Almost surely, 2^117849517 is an apocalyptic number.

It is an amenable number.

117849517 is a deficient number, since it is larger than the sum of its proper divisors (1).

117849517 is an equidigital number, since it uses as much as digits as its factorization.

117849517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 43.

The square root of 117849517 is about 10855.8517399603. The cubic root of 117849517 is about 490.2782218376.

The spelling of 117849517 in words is "one hundred seventeen million, eight hundred forty-nine thousand, five hundred seventeen".