117990623 has 2 divisors, whose sum is σ = 117990624. Its totient is φ = 117990622.

The previous prime is 117990611. The next prime is 117990637. The reversal of 117990623 is 326099711.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117990623 - 2²⁴ = 101213407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117990683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58995311 + 58995312.

It is an arithmetic number, because the mean of its divisors is an integer number (58995312).

Almost surely, 2^117990623 is an apocalyptic number.

117990623 is a deficient number, since it is larger than the sum of its proper divisors (1).

117990623 is an equidigital number, since it uses as much as digits as its factorization.

117990623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 117990623 is about 10862.3488712157. The cubic root of 117990623 is about 490.4738204499.

The spelling of 117990623 in words is "one hundred seventeen million, nine hundred ninety thousand, six hundred twenty-three".