117889507 has 2 divisors, whose sum is σ = 117889508. Its totient is φ = 117889506.

The previous prime is 117889483. The next prime is 117889517. The reversal of 117889507 is 705988711.

It is a strong prime.

It is an emirp because it is prime and its reverse (705988711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117889507 - 2²³ = 109500899 is a prime.

It is not a weakly prime, because it can be changed into another prime (117889517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58944753 + 58944754.

It is an arithmetic number, because the mean of its divisors is an integer number (58944754).

Almost surely, 2^117889507 is an apocalyptic number.

117889507 is a deficient number, since it is larger than the sum of its proper divisors (1).

117889507 is an equidigital number, since it uses as much as digits as its factorization.

117889507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 46.

The square root of 117889507 is about 10857.6934475053. The cubic root of 117889507 is about 490.3336711069. Note that the first 3 decimals are identical.

The spelling of 117889507 in words is "one hundred seventeen million, eight hundred eighty-nine thousand, five hundred seven".