117438877 has 2 divisors, whose sum is σ = 117438878. Its totient is φ = 117438876.

The previous prime is 117438869. The next prime is 117438901. The reversal of 117438877 is 778834711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109537156 + 7901721 = 10466^2 + 2811^2 .

It is an emirp because it is prime and its reverse (778834711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117438877 - 2³ = 117438869 is a prime.

It is a super-2 number, since 2×117438877² = 27583779662042258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117438817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58719438 + 58719439.

It is an arithmetic number, because the mean of its divisors is an integer number (58719439).

Almost surely, 2^117438877 is an apocalyptic number.

It is an amenable number.

117438877 is a deficient number, since it is larger than the sum of its proper divisors (1).

117438877 is an equidigital number, since it uses as much as digits as its factorization.

117438877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 263424, while the sum is 46.

The square root of 117438877 is about 10836.9219338334. The cubic root of 117438877 is about 489.7081102060.

The spelling of 117438877 in words is "one hundred seventeen million, four hundred thirty-eight thousand, eight hundred seventy-seven".