117697439 has 4 divisors (see below), whose sum is σ = 119187360. Its totient is φ = 116207520.

The previous prime is 117697423. The next prime is 117697441. The reversal of 117697439 is 934796711.

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 117697439 - 2⁴ = 117697423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117697393 and 117697402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117697499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744842 + ... + 744999.

It is an arithmetic number, because the mean of its divisors is an integer number (29796840).

Almost surely, 2^117697439 is an apocalyptic number.

117697439 is a deficient number, since it is larger than the sum of its proper divisors (1489921).

117697439 is an equidigital number, since it uses as much as digits as its factorization.

117697439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489920.

The product of its digits is 285768, while the sum is 47.

The square root of 117697439 is about 10848.8450537373. The cubic root of 117697439 is about 490.0672391416.

The spelling of 117697439 in words is "one hundred seventeen million, six hundred ninety-seven thousand, four hundred thirty-nine".