117851079 has 4 divisors (see below), whose sum is σ = 157134776. Its totient is φ = 78567384.

The previous prime is 117851077. The next prime is 117851081. The reversal of 117851079 is 970158711.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (117851077) and next prime (117851081).

It is not a de Polignac number, because 117851079 - 2¹ = 117851077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117851077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19641844 + ... + 19641849.

It is an arithmetic number, because the mean of its divisors is an integer number (39283694).

Almost surely, 2^117851079 is an apocalyptic number.

117851079 is a deficient number, since it is larger than the sum of its proper divisors (39283697).

117851079 is an equidigital number, since it uses as much as digits as its factorization.

117851079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39283696.

The product of its (nonzero) digits is 17640, while the sum is 39.

The square root of 117851079 is about 10855.9236824878. The cubic root of 117851079 is about 490.2803879084.

The spelling of 117851079 in words is "one hundred seventeen million, eight hundred fifty-one thousand, seventy-nine".