117869 has 4 divisors (see below), whose sum is σ = 118560. Its totient is φ = 117180.

The previous prime is 117851. The next prime is 117877. The reversal of 117869 is 968711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 968711 = 17 ⋅56983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117869 is a prime.

It is a super-2 number, since 2×117869² = 27786202322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122 + ... + 500.

It is an arithmetic number, because the mean of its divisors is an integer number (29640).

2¹¹⁷⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

117869 is a deficient number, since it is larger than the sum of its proper divisors (691).

117869 is an equidigital number, since it uses as much as digits as its factorization.

117869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690.

The product of its digits is 3024, while the sum is 32.

The square root of 117869 is about 343.3205499238. The cubic root of 117869 is about 49.0305238111.

The spelling of 117869 in words is "one hundred seventeen thousand, eight hundred sixty-nine".