86311447 has 2 divisors, whose sum is σ = 86311448. Its totient is φ = 86311446.

The previous prime is 86311391. The next prime is 86311457. The reversal of 86311447 is 74411368.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86311447 - 2²³ = 77922839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86311457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43155723 + 43155724.

It is an arithmetic number, because the mean of its divisors is an integer number (43155724).

Almost surely, 2^86311447 is an apocalyptic number.

86311447 is a deficient number, since it is larger than the sum of its proper divisors (1).

86311447 is an equidigital number, since it uses as much as digits as its factorization.

86311447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 86311447 is about 9290.3954167732. The cubic root of 86311447 is about 441.9326948560.

The spelling of 86311447 in words is "eighty-six million, three hundred eleven thousand, four hundred forty-seven".