117907481 has 2 divisors, whose sum is σ = 117907482. Its totient is φ = 117907480.

The previous prime is 117907469. The next prime is 117907507. The reversal of 117907481 is 184709711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114297481 + 3610000 = 10691^2 + 1900^2 .

It is a cyclic number.

It is not a de Polignac number, because 117907481 - 2¹⁸ = 117645337 is a prime.

It is a super-2 number, since 2×117907481² = 27804348151530722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (117907411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58953740 + 58953741.

It is an arithmetic number, because the mean of its divisors is an integer number (58953741).

Almost surely, 2^117907481 is an apocalyptic number.

It is an amenable number.

117907481 is a deficient number, since it is larger than the sum of its proper divisors (1).

117907481 is an equidigital number, since it uses as much as digits as its factorization.

117907481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 38.

The square root of 117907481 is about 10858.5211239837. The cubic root of 117907481 is about 490.3585893822.

The spelling of 117907481 in words is "one hundred seventeen million, nine hundred seven thousand, four hundred eighty-one".