117493861 has 2 divisors, whose sum is σ = 117493862. Its totient is φ = 117493860.

The previous prime is 117493837. The next prime is 117493889. The reversal of 117493861 is 168394711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 53012961 = 8030^2 + 7281^2 .

It is a cyclic number.

It is not a de Polignac number, because 117493861 - 2⁵ = 117493829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117491861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58746930 + 58746931.

It is an arithmetic number, because the mean of its divisors is an integer number (58746931).

Almost surely, 2^117493861 is an apocalyptic number.

It is an amenable number.

117493861 is a deficient number, since it is larger than the sum of its proper divisors (1).

117493861 is an equidigital number, since it uses as much as digits as its factorization.

117493861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 117493861 is about 10839.4585196863. The cubic root of 117493861 is about 489.7845241679.

The spelling of 117493861 in words is "one hundred seventeen million, four hundred ninety-three thousand, eight hundred sixty-one".