86523947 has 2 divisors, whose sum is σ = 86523948. Its totient is φ = 86523946.

The previous prime is 86523923. The next prime is 86523961. The reversal of 86523947 is 74932568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86523947 - 2¹⁸ = 86261803 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86523898 and 86523907.

It is not a weakly prime, because it can be changed into another prime (86523917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43261973 + 43261974.

It is an arithmetic number, because the mean of its divisors is an integer number (43261974).

Almost surely, 2^86523947 is an apocalyptic number.

86523947 is a deficient number, since it is larger than the sum of its proper divisors (1).

86523947 is an equidigital number, since it uses as much as digits as its factorization.

86523947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 86523947 is about 9301.8249284751. The cubic root of 86523947 is about 442.2950791296.

The spelling of 86523947 in words is "eighty-six million, five hundred twenty-three thousand, nine hundred forty-seven".