86998447 has 2 divisors, whose sum is σ = 86998448. Its totient is φ = 86998446.

The previous prime is 86998423. The next prime is 86998453. The reversal of 86998447 is 74489968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86998447 - 2⁷ = 86998319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86998547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43499223 + 43499224.

It is an arithmetic number, because the mean of its divisors is an integer number (43499224).

Almost surely, 2^86998447 is an apocalyptic number.

86998447 is a deficient number, since it is larger than the sum of its proper divisors (1).

86998447 is an equidigital number, since it uses as much as digits as its factorization.

86998447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 55.

The square root of 86998447 is about 9327.2958031790. The cubic root of 86998447 is about 443.1021255955.

The spelling of 86998447 in words is "eighty-six million, nine hundred ninety-eight thousand, four hundred forty-seven".