117894751 has 4 divisors (see below), whose sum is σ = 126963592. Its totient is φ = 108825912.

The previous prime is 117894739. The next prime is 117894769. The reversal of 117894751 is 157498711.

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

It is not a de Polignac number, because 117894751 - 2²¹ = 115797599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117894698 and 117894707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117894701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4534401 + ... + 4534426.

It is an arithmetic number, because the mean of its divisors is an integer number (31740898).

Almost surely, 2^117894751 is an apocalyptic number.

117894751 is a deficient number, since it is larger than the sum of its proper divisors (9068841).

117894751 is an equidigital number, since it uses as much as digits as its factorization.

117894751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068840.

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

The square root of 117894751 is about 10857.9349325735. The cubic root of 117894751 is about 490.3409413939.

The spelling of 117894751 in words is "one hundred seventeen million, eight hundred ninety-four thousand, seven hundred fifty-one".