117747247 has 4 divisors (see below), whose sum is σ = 117902736. Its totient is φ = 117591760.

The previous prime is 117747239. The next prime is 117747251. The reversal of 117747247 is 742747711.

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

It is a cyclic number.

It is not a de Polignac number, because 117747247 - 2³ = 117747239 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117747547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76603 + ... + 78124.

It is an arithmetic number, because the mean of its divisors is an integer number (29475684).

Almost surely, 2^117747247 is an apocalyptic number.

117747247 is a deficient number, since it is larger than the sum of its proper divisors (155489).

117747247 is an equidigital number, since it uses as much as digits as its factorization.

117747247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155488.

The product of its digits is 76832, while the sum is 40.

The square root of 117747247 is about 10851.1403548199. The cubic root of 117747247 is about 490.1363593842.

The spelling of 117747247 in words is "one hundred seventeen million, seven hundred forty-seven thousand, two hundred forty-seven".