117458987 has 2 divisors, whose sum is σ = 117458988. Its totient is φ = 117458986.

The previous prime is 117458983. The next prime is 117458989. The reversal of 117458987 is 789854711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117458987 - 2² = 117458983 is a prime.

It is a super-2 number, since 2×117458987² = 27593227254132338, which contains 22 as substring.

Together with 117458989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117458981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58729493 + 58729494.

It is an arithmetic number, because the mean of its divisors is an integer number (58729494).

Almost surely, 2^117458987 is an apocalyptic number.

117458987 is a deficient number, since it is larger than the sum of its proper divisors (1).

117458987 is an equidigital number, since it uses as much as digits as its factorization.

117458987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 50.

The square root of 117458987 is about 10837.8497406081. The cubic root of 117458987 is about 489.7360608253.

The spelling of 117458987 in words is "one hundred seventeen million, four hundred fifty-eight thousand, nine hundred eighty-seven".