8131469 has 2 divisors, whose sum is σ = 8131470. Its totient is φ = 8131468.

The previous prime is 8131463. The next prime is 8131477. The reversal of 8131469 is 9641318.

It is a happy number.

8131469 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6568969 + 1562500 = 2563^2 + 1250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8131469 is a prime.

It is a super-2 number, since 2×8131469² = 132241576195922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8131463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065734 + 4065735.

It is an arithmetic number, because the mean of its divisors is an integer number (4065735).

Almost surely, 2^8131469 is an apocalyptic number.

It is an amenable number.

8131469 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131469 is an equidigital number, since it uses as much as digits as its factorization.

8131469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 8131469 is about 2851.5730746379. The cubic root of 8131469 is about 201.0896277757.

The spelling of 8131469 in words is "eight million, one hundred thirty-one thousand, four hundred sixty-nine".