86137949 has 2 divisors, whose sum is σ = 86137950. Its totient is φ = 86137948.

The previous prime is 86137907. The next prime is 86137957. The reversal of 86137949 is 94973168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74269924 + 11868025 = 8618^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 86137949 - 2⁸ = 86137693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86137969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43068974 + 43068975.

It is an arithmetic number, because the mean of its divisors is an integer number (43068975).

Almost surely, 2^86137949 is an apocalyptic number.

It is an amenable number.

86137949 is a deficient number, since it is larger than the sum of its proper divisors (1).

86137949 is an equidigital number, since it uses as much as digits as its factorization.

86137949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 86137949 is about 9281.0532268703. The cubic root of 86137949 is about 441.6363808512.

The spelling of 86137949 in words is "eighty-six million, one hundred thirty-seven thousand, nine hundred forty-nine".