117916969 has 4 divisors (see below), whose sum is σ = 118960596. Its totient is φ = 116873344.

The previous prime is 117916933. The next prime is 117916993. The reversal of 117916969 is 969619711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969619711 = 7349 ⋅131939.

It can be written as a sum of positive squares in 2 ways, for example, as 19669225 + 98247744 = 4435^2 + 9912^2 .

It is a cyclic number.

It is not a de Polignac number, because 117916969 - 2⁹ = 117916457 is a prime.

It is a super-2 number, since 2×117916969² = 27808823156293922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117916919) 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, 521644 + ... + 521869.

It is an arithmetic number, because the mean of its divisors is an integer number (29740149).

Almost surely, 2^117916969 is an apocalyptic number.

It is an amenable number.

117916969 is a deficient number, since it is larger than the sum of its proper divisors (1043627).

117916969 is a wasteful number, since it uses less digits than its factorization.

117916969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043626.

The product of its digits is 183708, while the sum is 49.

The square root of 117916969 is about 10858.9580071018. The cubic root of 117916969 is about 490.3717420605.

The spelling of 117916969 in words is "one hundred seventeen million, nine hundred sixteen thousand, nine hundred sixty-nine".