8469431945 has 8 divisors (see below), whose sum is σ = 10945112136. Its totient is φ = 6254349696.

The previous prime is 8469431941. The next prime is 8469431947. The reversal of 8469431945 is 5491349648.

It can be written as a sum of positive squares in 4 ways, for example, as 1567504 + 8467864441 = 1252^2 + 92021^2 .

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 8469431945 - 2² = 8469431941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8469431941) 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, 65149412 + ... + 65149541.

It is an arithmetic number, because the mean of its divisors is an integer number (1368139017).

Almost surely, 2^8469431945 is an apocalyptic number.

It is an amenable number.

8469431945 is a deficient number, since it is larger than the sum of its proper divisors (2475680191).

8469431945 is a wasteful number, since it uses less digits than its factorization.

8469431945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130298971.

The product of its digits is 3732480, while the sum is 53.

The square root of 8469431945 is about 92029.5167052397. The cubic root of 8469431945 is about 2038.3781760020.

The spelling of 8469431945 in words is "eight billion, four hundred sixty-nine million, four hundred thirty-one thousand, nine hundred forty-five".