86158957 has 2 divisors, whose sum is σ = 86158958. Its totient is φ = 86158956.

The previous prime is 86158927. The next prime is 86158981. The reversal of 86158957 is 75985168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72829156 + 13329801 = 8534^2 + 3651^2 .

It is a cyclic number.

It is not a de Polignac number, because 86158957 - 2¹⁵ = 86126189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86158957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86158927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43079478 + 43079479.

It is an arithmetic number, because the mean of its divisors is an integer number (43079479).

Almost surely, 2^86158957 is an apocalyptic number.

It is an amenable number.

86158957 is a deficient number, since it is larger than the sum of its proper divisors (1).

86158957 is an equidigital number, since it uses as much as digits as its factorization.

86158957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 49.

The square root of 86158957 is about 9282.1849259751. The cubic root of 86158957 is about 441.6722811833.

The spelling of 86158957 in words is "eighty-six million, one hundred fifty-eight thousand, nine hundred fifty-seven".