86478487 has 2 divisors, whose sum is σ = 86478488. Its totient is φ = 86478486.

The previous prime is 86478467. The next prime is 86478503. The reversal of 86478487 is 78487468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86478487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86478407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43239243 + 43239244.

It is an arithmetic number, because the mean of its divisors is an integer number (43239244).

Almost surely, 2^86478487 is an apocalyptic number.

86478487 is a deficient number, since it is larger than the sum of its proper divisors (1).

86478487 is an equidigital number, since it uses as much as digits as its factorization.

86478487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2408448, while the sum is 52.

The square root of 86478487 is about 9299.3810009054. The cubic root of 86478487 is about 442.2176044057.

The spelling of 86478487 in words is "eighty-six million, four hundred seventy-eight thousand, four hundred eighty-seven".