117644539 has 16 divisors (see below), whose sum is σ = 129741696. Its totient is φ = 106214400.

The previous prime is 117644533. The next prime is 117644543. The reversal of 117644539 is 935446711.

It is a cyclic number.

It is not a de Polignac number, because 117644539 - 2⁵ = 117644507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117644533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41134 + ... + 43900.

It is an arithmetic number, because the mean of its divisors is an integer number (8108856).

Almost surely, 2^117644539 is an apocalyptic number.

117644539 is a deficient number, since it is larger than the sum of its proper divisors (12097157).

117644539 is a wasteful number, since it uses less digits than its factorization.

117644539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886.

The product of its digits is 90720, while the sum is 40.

The square root of 117644539 is about 10846.4067321855. The cubic root of 117644539 is about 489.9938066689.

The spelling of 117644539 in words is "one hundred seventeen million, six hundred forty-four thousand, five hundred thirty-nine".