117838407 has 16 divisors (see below), whose sum is σ = 173594880. Its totient is φ = 70722432.

The previous prime is 117838381. The next prime is 117838423. The reversal of 117838407 is 704838711.

It is not a de Polignac number, because 117838407 - 2⁸ = 117838151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117838477) 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 in 15 ways as a sum of consecutive naturals, for example, 49057 + ... + 51402.

It is an arithmetic number, because the mean of its divisors is an integer number (10849680).

Almost surely, 2^117838407 is an apocalyptic number.

117838407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

117838407 is a deficient number, since it is larger than the sum of its proper divisors (55756473).

117838407 is a wasteful number, since it uses less digits than its factorization.

117838407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100502.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 117838407 is about 10855.3400223116. The cubic root of 117838407 is about 490.2628147253.

The spelling of 117838407 in words is "one hundred seventeen million, eight hundred thirty-eight thousand, four hundred seven".