86571469 has 2 divisors, whose sum is σ = 86571470. Its totient is φ = 86571468.

The previous prime is 86571461. The next prime is 86571479. The reversal of 86571469 is 96417568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 11142244 = 8685^2 + 3338^2 .

It is a cyclic number.

It is not a de Polignac number, because 86571469 - 2³ = 86571461 is a prime.

It is a super-2 number, since 2×86571469² = 14989238489635922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86571461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43285734 + 43285735.

It is an arithmetic number, because the mean of its divisors is an integer number (43285735).

Almost surely, 2^86571469 is an apocalyptic number.

It is an amenable number.

86571469 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571469 is an equidigital number, since it uses as much as digits as its factorization.

86571469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 86571469 is about 9304.3790228043. The cubic root of 86571469 is about 442.3760389894.

The spelling of 86571469 in words is "eighty-six million, five hundred seventy-one thousand, four hundred sixty-nine".