86157893 has 2 divisors, whose sum is σ = 86157894. Its totient is φ = 86157892.

The previous prime is 86157881. The next prime is 86157919. The reversal of 86157893 is 39875168.

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., 84676804 + 1481089 = 9202^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 86157893 - 2⁶ = 86157829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86157823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43078946 + 43078947.

It is an arithmetic number, because the mean of its divisors is an integer number (43078947).

Almost surely, 2^86157893 is an apocalyptic number.

It is an amenable number.

86157893 is a deficient number, since it is larger than the sum of its proper divisors (1).

86157893 is an equidigital number, since it uses as much as digits as its factorization.

86157893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 86157893 is about 9282.1276117063. The cubic root of 86157893 is about 441.6704630661.

The spelling of 86157893 in words is "eighty-six million, one hundred fifty-seven thousand, eight hundred ninety-three".