86935993 has 2 divisors, whose sum is σ = 86935994. Its totient is φ = 86935992.

The previous prime is 86935991. The next prime is 86936023. The reversal of 86935993 is 39953968.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45873529 + 41062464 = 6773^2 + 6408^2 .

It is a cyclic number.

It is not a de Polignac number, because 86935993 - 2¹ = 86935991 is a prime.

Together with 86935991, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 86935993.

It is not a weakly prime, because it can be changed into another prime (86935991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43467996 + 43467997.

It is an arithmetic number, because the mean of its divisors is an integer number (43467997).

Almost surely, 2^86935993 is an apocalyptic number.

It is an amenable number.

86935993 is a deficient number, since it is larger than the sum of its proper divisors (1).

86935993 is an equidigital number, since it uses as much as digits as its factorization.

86935993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 52.

The square root of 86935993 is about 9323.9472864233. The cubic root of 86935993 is about 442.9960695842.

The spelling of 86935993 in words is "eighty-six million, nine hundred thirty-five thousand, nine hundred ninety-three".