86430847 has 2 divisors, whose sum is σ = 86430848. Its totient is φ = 86430846.

The previous prime is 86430809. The next prime is 86430857. The reversal of 86430847 is 74803468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86430847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86430857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43215423 + 43215424.

It is an arithmetic number, because the mean of its divisors is an integer number (43215424).

Almost surely, 2^86430847 is an apocalyptic number.

86430847 is a deficient number, since it is larger than the sum of its proper divisors (1).

86430847 is an equidigital number, since it uses as much as digits as its factorization.

86430847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 86430847 is about 9296.8191872274. The cubic root of 86430847 is about 442.1363852989.

The spelling of 86430847 in words is "eighty-six million, four hundred thirty thousand, eight hundred forty-seven".