117954791 has 2 divisors, whose sum is σ = 117954792. Its totient is φ = 117954790.

The previous prime is 117954763. The next prime is 117954817. The reversal of 117954791 is 197459711.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117954791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117954751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58977395 + 58977396.

It is an arithmetic number, because the mean of its divisors is an integer number (58977396).

Almost surely, 2^117954791 is an apocalyptic number.

117954791 is a deficient number, since it is larger than the sum of its proper divisors (1).

117954791 is an equidigital number, since it uses as much as digits as its factorization.

117954791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 44.

The square root of 117954791 is about 10860.6993789535. The cubic root of 117954791 is about 490.4241655512.

The spelling of 117954791 in words is "one hundred seventeen million, nine hundred fifty-four thousand, seven hundred ninety-one".