117208477 has 2 divisors, whose sum is σ = 117208478. Its totient is φ = 117208476.

The previous prime is 117208471. The next prime is 117208513. The reversal of 117208477 is 774802711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66357316 + 50851161 = 8146^2 + 7131^2 .

It is an emirp because it is prime and its reverse (774802711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117208477 - 2²³ = 108819869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117208471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58604238 + 58604239.

It is an arithmetic number, because the mean of its divisors is an integer number (58604239).

Almost surely, 2^117208477 is an apocalyptic number.

It is an amenable number.

117208477 is a deficient number, since it is larger than the sum of its proper divisors (1).

117208477 is an equidigital number, since it uses as much as digits as its factorization.

117208477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 117208477 is about 10826.2863900785. The cubic root of 117208477 is about 489.3876524008.

The spelling of 117208477 in words is "one hundred seventeen million, two hundred eight thousand, four hundred seventy-seven".