86539847 has 2 divisors, whose sum is σ = 86539848. Its totient is φ = 86539846.

The previous prime is 86539829. The next prime is 86539853. The reversal of 86539847 is 74893568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86539847 - 2¹² = 86535751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86539795 and 86539804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86539897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43269923 + 43269924.

It is an arithmetic number, because the mean of its divisors is an integer number (43269924).

Almost surely, 2^86539847 is an apocalyptic number.

86539847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86539847 is an equidigital number, since it uses as much as digits as its factorization.

86539847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 86539847 is about 9302.6795602127. The cubic root of 86539847 is about 442.3221701307.

The spelling of 86539847 in words is "eighty-six million, five hundred thirty-nine thousand, eight hundred forty-seven".