117278873 has 2 divisors, whose sum is σ = 117278874. Its totient is φ = 117278872.

The previous prime is 117278779. The next prime is 117278891. The reversal of 117278873 is 378872711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62932489 + 54346384 = 7933^2 + 7372^2 .

It is a cyclic number.

It is not a de Polignac number, because 117278873 - 2⁸ = 117278617 is a prime.

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 (117271873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58639436 + 58639437.

It is an arithmetic number, because the mean of its divisors is an integer number (58639437).

Almost surely, 2^117278873 is an apocalyptic number.

It is an amenable number.

117278873 is a deficient number, since it is larger than the sum of its proper divisors (1).

117278873 is an equidigital number, since it uses as much as digits as its factorization.

117278873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 44.

The square root of 117278873 is about 10829.5370630512. The cubic root of 117278873 is about 489.4856090198.

The spelling of 117278873 in words is "one hundred seventeen million, two hundred seventy-eight thousand, eight hundred seventy-three".