86904847 has 2 divisors, whose sum is σ = 86904848. Its totient is φ = 86904846.

The previous prime is 86904827. The next prime is 86904863. The reversal of 86904847 is 74840968.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86904847 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86904797 and 86904806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86904827) 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 as a sum of consecutive naturals, namely, 43452423 + 43452424.

It is an arithmetic number, because the mean of its divisors is an integer number (43452424).

Almost surely, 2^86904847 is an apocalyptic number.

86904847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86904847 is an equidigital number, since it uses as much as digits as its factorization.

86904847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 86904847 is about 9322.2769214393. The cubic root of 86904847 is about 442.9431601460.

The spelling of 86904847 in words is "eighty-six million, nine hundred four thousand, eight hundred forty-seven".