117823547 has 2 divisors, whose sum is σ = 117823548. Its totient is φ = 117823546.

The previous prime is 117823471. The next prime is 117823571. The reversal of 117823547 is 745328711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117823547 - 2⁸ = 117823291 is a prime.

It is a super-2 number, since 2×117823547² = 27764776455322418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117823547.

It is not a weakly prime, because it can be changed into another prime (117843547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58911773 + 58911774.

It is an arithmetic number, because the mean of its divisors is an integer number (58911774).

Almost surely, 2^117823547 is an apocalyptic number.

117823547 is a deficient number, since it is larger than the sum of its proper divisors (1).

117823547 is an equidigital number, since it uses as much as digits as its factorization.

117823547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 117823547 is about 10854.6555449724. The cubic root of 117823547 is about 490.2422056786.

The spelling of 117823547 in words is "one hundred seventeen million, eight hundred twenty-three thousand, five hundred forty-seven".