117990679 has 2 divisors, whose sum is σ = 117990680. Its totient is φ = 117990678.

The previous prime is 117990637. The next prime is 117990683. The reversal of 117990679 is 976099711.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117990679 - 2¹⁵ = 117957911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117990079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58995339 + 58995340.

It is an arithmetic number, because the mean of its divisors is an integer number (58995340).

Almost surely, 2^117990679 is an apocalyptic number.

117990679 is a deficient number, since it is larger than the sum of its proper divisors (1).

117990679 is an equidigital number, since it uses as much as digits as its factorization.

117990679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 214326, while the sum is 49.

The square root of 117990679 is about 10862.3514489267. The cubic root of 117990679 is about 490.4738980451.

The spelling of 117990679 in words is "one hundred seventeen million, nine hundred ninety thousand, six hundred seventy-nine".