8431472897 has 4 divisors (see below), whose sum is σ = 8518395396. Its totient is φ = 8344550400.

The previous prime is 8431472879. The next prime is 8431472953. The reversal of 8431472897 is 7982741348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2631279616 + 5800193281 = 51296^2 + 76159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8431472897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8431472807) 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, 43461104 + ... + 43461297.

It is an arithmetic number, because the mean of its divisors is an integer number (2129598849).

Almost surely, 2^8431472897 is an apocalyptic number.

It is an amenable number.

8431472897 is a deficient number, since it is larger than the sum of its proper divisors (86922499).

8431472897 is an equidigital number, since it uses as much as digits as its factorization.

8431472897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86922498.

The product of its digits is 2709504, while the sum is 53.

The square root of 8431472897 is about 91823.0521002215. The cubic root of 8431472897 is about 2035.3283540294.

The spelling of 8431472897 in words is "eight billion, four hundred thirty-one million, four hundred seventy-two thousand, eight hundred ninety-seven".