117426887 has 4 divisors (see below), whose sum is σ = 121476120. Its totient is φ = 113377656.

The previous prime is 117426877. The next prime is 117426913. The reversal of 117426887 is 788624711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117426887 - 2¹⁰ = 117425863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117426817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024573 + ... + 2024630.

It is an arithmetic number, because the mean of its divisors is an integer number (30369030).

Almost surely, 2^117426887 is an apocalyptic number.

117426887 is a deficient number, since it is larger than the sum of its proper divisors (4049233).

117426887 is an equidigital number, since it uses as much as digits as its factorization.

117426887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049232.

The product of its digits is 150528, while the sum is 44.

The square root of 117426887 is about 10836.3687183484. The cubic root of 117426887 is about 489.6914439474.

The spelling of 117426887 in words is "one hundred seventeen million, four hundred twenty-six thousand, eight hundred eighty-seven".