86619943 has 2 divisors, whose sum is σ = 86619944. Its totient is φ = 86619942.

The previous prime is 86619941. The next prime is 86619959. The reversal of 86619943 is 34991668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86619943 - 2¹ = 86619941 is a prime.

Together with 86619941, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 86619893 and 86619902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86619941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43309971 + 43309972.

It is an arithmetic number, because the mean of its divisors is an integer number (43309972).

Almost surely, 2^86619943 is an apocalyptic number.

86619943 is a deficient number, since it is larger than the sum of its proper divisors (1).

86619943 is an equidigital number, since it uses as much as digits as its factorization.

86619943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 86619943 is about 9306.9835607462. The cubic root of 86619943 is about 442.4585901858.

The spelling of 86619943 in words is "eighty-six million, six hundred nineteen thousand, nine hundred forty-three".