117989513 has 8 divisors (see below), whose sum is σ = 122068296. Its totient is φ = 113968000.

The previous prime is 117989507. The next prime is 117989533. The reversal of 117989513 is 315989711.

It can be written as a sum of positive squares in 4 ways, for example, as 19642624 + 98346889 = 4432^2 + 9917^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117989513 - 2⁴ = 117989497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117989533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10106 + ... + 18387.

It is an arithmetic number, because the mean of its divisors is an integer number (15258537).

Almost surely, 2^117989513 is an apocalyptic number.

It is an amenable number.

117989513 is a deficient number, since it is larger than the sum of its proper divisors (4078783).

117989513 is a wasteful number, since it uses less digits than its factorization.

117989513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28635.

The product of its digits is 68040, while the sum is 44.

The square root of 117989513 is about 10862.2977771740. The cubic root of 117989513 is about 490.4722823965.

The spelling of 117989513 in words is "one hundred seventeen million, nine hundred eighty-nine thousand, five hundred thirteen".