86571479 has 2 divisors, whose sum is σ = 86571480. Its totient is φ = 86571478.

The previous prime is 86571469. The next prime is 86571487. The reversal of 86571479 is 97417568.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86571479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86571469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43285739 + 43285740.

It is an arithmetic number, because the mean of its divisors is an integer number (43285740).

Almost surely, 2^86571479 is an apocalyptic number.

86571479 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571479 is an equidigital number, since it uses as much as digits as its factorization.

86571479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 47.

The square root of 86571479 is about 9304.3795601856. The cubic root of 86571479 is about 442.3760560226.

The spelling of 86571479 in words is "eighty-six million, five hundred seventy-one thousand, four hundred seventy-nine".