86347971 has 32 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 55721952.

The previous prime is 86347969. The next prime is 86348011. The reversal of 86347971 is 17974368.

86347971 is a `hidden beast` number, since 8 + 634 + 7 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 86347971 - 2¹ = 86347969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86347931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118410 + ... + 119136.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^86347971 is an apocalyptic number.

86347971 is a deficient number, since it is larger than the sum of its proper divisors (45740349).

86347971 is a wasteful number, since it uses less digits than its factorization.

86347971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 86347971 is about 9292.3608948426. The cubic root of 86347971 is about 441.9950229096.

The spelling of 86347971 in words is "eighty-six million, three hundred forty-seven thousand, nine hundred seventy-one".