117445919 has 2 divisors, whose sum is σ = 117445920. Its totient is φ = 117445918.

The previous prime is 117445907. The next prime is 117445963. The reversal of 117445919 is 919544711.

It is a weak prime.

It is an emirp because it is prime and its reverse (919544711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117445919 - 2¹⁶ = 117380383 is a prime.

It is a super-2 number, since 2×117445919² = 27587087779509122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117445219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58722959 + 58722960.

It is an arithmetic number, because the mean of its divisors is an integer number (58722960).

Almost surely, 2^117445919 is an apocalyptic number.

117445919 is a deficient number, since it is larger than the sum of its proper divisors (1).

117445919 is an equidigital number, since it uses as much as digits as its factorization.

117445919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 117445919 is about 10837.2468367201. The cubic root of 117445919 is about 489.7178981504.

The spelling of 117445919 in words is "one hundred seventeen million, four hundred forty-five thousand, nine hundred nineteen".