117988867 has 2 divisors, whose sum is σ = 117988868. Its totient is φ = 117988866.

The previous prime is 117988853. The next prime is 117988889. The reversal of 117988867 is 768889711.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117988867 - 2¹⁵ = 117956099 is a prime.

It is not a weakly prime, because it can be changed into another prime (117988807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58994433 + 58994434.

It is an arithmetic number, because the mean of its divisors is an integer number (58994434).

Almost surely, 2^117988867 is an apocalyptic number.

117988867 is a deficient number, since it is larger than the sum of its proper divisors (1).

117988867 is an equidigital number, since it uses as much as digits as its factorization.

117988867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 55.

The square root of 117988867 is about 10862.2680412518. The cubic root of 117988867 is about 490.4713872727.

The spelling of 117988867 in words is "one hundred seventeen million, nine hundred eighty-eight thousand, eight hundred sixty-seven".