8472911609 has 2 divisors, whose sum is σ = 8472911610. Its totient is φ = 8472911608.

The previous prime is 8472911567. The next prime is 8472911617. The reversal of 8472911609 is 9061192748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5476444009 + 2996467600 = 74003^2 + 54740^2 .

It is a cyclic number.

It is not a de Polignac number, because 8472911609 - 2³² = 4177944313 is a prime.

It is a super-2 number, since 2×8472911609² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8472911669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236455804 + 4236455805.

It is an arithmetic number, because the mean of its divisors is an integer number (4236455805).

Almost surely, 2^8472911609 is an apocalyptic number.

It is an amenable number.

8472911609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8472911609 is an equidigital number, since it uses as much as digits as its factorization.

8472911609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 8472911609 is about 92048.4199158247. The cubic root of 8472911609 is about 2038.6572935019.

The spelling of 8472911609 in words is "eight billion, four hundred seventy-two million, nine hundred eleven thousand, six hundred nine".