471116909 has 4 divisors (see below), whose sum is σ = 471256416. Its totient is φ = 470977404.

The previous prime is 471116873. The next prime is 471116911. The reversal of 471116909 is 909611174.

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 an emirpimes, since its reverse is a distinct semiprime: 909611174 = 2 ⋅454805587.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-471116909 is a prime.

It is a super-2 number, since 2×471116909² = 443902283891428562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (471116929) 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, 64559 + ... + 71484.

It is an arithmetic number, because the mean of its divisors is an integer number (117814104).

Almost surely, 2^471116909 is an apocalyptic number.

It is an amenable number.

471116909 is a deficient number, since it is larger than the sum of its proper divisors (139507).

471116909 is a wasteful number, since it uses less digits than its factorization.

471116909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139506.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 471116909 is about 21705.2276882782. The cubic root of 471116909 is about 778.1134051572.

The spelling of 471116909 in words is "four hundred seventy-one million, one hundred sixteen thousand, nine hundred nine".