86856403 has 2 divisors, whose sum is σ = 86856404. Its totient is φ = 86856402.

The previous prime is 86856401. The next prime is 86856449. The reversal of 86856403 is 30465868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86856403 - 2¹ = 86856401 is a prime.

Together with 86856401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86856401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43428201 + 43428202.

It is an arithmetic number, because the mean of its divisors is an integer number (43428202).

Almost surely, 2^86856403 is an apocalyptic number.

86856403 is a deficient number, since it is larger than the sum of its proper divisors (1).

86856403 is an equidigital number, since it uses as much as digits as its factorization.

86856403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 86856403 is about 9319.6782669790. The cubic root of 86856403 is about 442.8608405073.

The spelling of 86856403 in words is "eighty-six million, eight hundred fifty-six thousand, four hundred three".