117623491 has 2 divisors, whose sum is σ = 117623492. Its totient is φ = 117623490.

The previous prime is 117623453. The next prime is 117623497. The reversal of 117623491 is 194326711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117623491 - 2¹¹ = 117621443 is a prime.

It is equal to p_6713980 and since 117623491 and 6713980 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (117623497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58811745 + 58811746.

It is an arithmetic number, because the mean of its divisors is an integer number (58811746).

Almost surely, 2^117623491 is an apocalyptic number.

117623491 is a deficient number, since it is larger than the sum of its proper divisors (1).

117623491 is an equidigital number, since it uses as much as digits as its factorization.

117623491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 117623491 is about 10845.4364135336. The cubic root of 117623491 is about 489.9645830295.

The spelling of 117623491 in words is "one hundred seventeen million, six hundred twenty-three thousand, four hundred ninety-one".