117611999 has 2 divisors, whose sum is σ = 117612000. Its totient is φ = 117611998.

The previous prime is 117611983. The next prime is 117612013. The reversal of 117611999 is 999116711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117611999 - 2⁴ = 117611983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117611959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58805999 + 58806000.

It is an arithmetic number, because the mean of its divisors is an integer number (58806000).

Almost surely, 2^117611999 is an apocalyptic number.

117611999 is a deficient number, since it is larger than the sum of its proper divisors (1).

117611999 is an equidigital number, since it uses as much as digits as its factorization.

117611999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30618, while the sum is 44.

The square root of 117611999 is about 10844.9065924977. The cubic root of 117611999 is about 489.9486257398.

The spelling of 117611999 in words is "one hundred seventeen million, six hundred eleven thousand, nine hundred ninety-nine".