86212949 has 2 divisors, whose sum is σ = 86212950. Its totient is φ = 86212948.

The previous prime is 86212909. The next prime is 86212961. The reversal of 86212949 is 94921268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 6682225 = 8918^2 + 2585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86212949 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 (86212909) 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, 43106474 + 43106475.

It is an arithmetic number, because the mean of its divisors is an integer number (43106475).

Almost surely, 2^86212949 is an apocalyptic number.

It is an amenable number.

86212949 is a deficient number, since it is larger than the sum of its proper divisors (1).

86212949 is an equidigital number, since it uses as much as digits as its factorization.

86212949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 41.

The square root of 86212949 is about 9285.0928374465. The cubic root of 86212949 is about 441.7645207335.

The spelling of 86212949 in words is "eighty-six million, two hundred twelve thousand, nine hundred forty-nine".