117784493 has 2 divisors, whose sum is σ = 117784494. Its totient is φ = 117784492.

The previous prime is 117784489. The next prime is 117784501. The reversal of 117784493 is 394487711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82773604 + 35010889 = 9098^2 + 5917^2 .

It is an emirp because it is prime and its reverse (394487711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117784493 - 2² = 117784489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117784463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58892246 + 58892247.

It is an arithmetic number, because the mean of its divisors is an integer number (58892247).

Almost surely, 2^117784493 is an apocalyptic number.

It is an amenable number.

117784493 is a deficient number, since it is larger than the sum of its proper divisors (1).

117784493 is an equidigital number, since it uses as much as digits as its factorization.

117784493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 117784493 is about 10852.8564442731. The cubic root of 117784493 is about 490.1880341785.

The spelling of 117784493 in words is "one hundred seventeen million, seven hundred eighty-four thousand, four hundred ninety-three".