86471047 has 12 divisors (see below), whose sum is σ = 94259640. Its totient is φ = 79286688.

The previous prime is 86471029. The next prime is 86471051. The reversal of 86471047 is 74017468.

It is not a de Polignac number, because 86471047 - 2¹¹ = 86468999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86470997 and 86471015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86471017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24904 + ... + 28162.

It is an arithmetic number, because the mean of its divisors is an integer number (7854970).

Almost surely, 2^86471047 is an apocalyptic number.

86471047 is a deficient number, since it is larger than the sum of its proper divisors (7788593).

86471047 is a wasteful number, since it uses less digits than its factorization.

86471047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442 (or 3429 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 86471047 is about 9298.9809656758. The cubic root of 86471047 is about 442.2049222793.

The spelling of 86471047 in words is "eighty-six million, four hundred seventy-one thousand, forty-seven".