117898947 has 6 divisors (see below), whose sum is σ = 170298492. Its totient is φ = 78599292.

The previous prime is 117898931. The next prime is 117898951. The reversal of 117898947 is 749898711.

It is not a de Polignac number, because 117898947 - 2⁴ = 117898931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117898893 and 117898902.

It is not an unprimeable number, because it can be changed into a prime (117898997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6549933 + ... + 6549950.

It is an arithmetic number, because the mean of its divisors is an integer number (28383082).

Almost surely, 2^117898947 is an apocalyptic number.

117898947 is a deficient number, since it is larger than the sum of its proper divisors (52399545).

117898947 is a wasteful number, since it uses less digits than its factorization.

117898947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099889 (or 13099886 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 117898947 is about 10858.1281536000. The cubic root of 117898947 is about 490.3467585774.

It can be divided in two parts, 11789 and 8947, that added together give a 4-th power (20736 = 12⁴).

The spelling of 117898947 in words is "one hundred seventeen million, eight hundred ninety-eight thousand, nine hundred forty-seven".