87934213 has 2 divisors, whose sum is σ = 87934214. Its totient is φ = 87934212.

The previous prime is 87934207. The next prime is 87934219. The reversal of 87934213 is 31243978.

It is a balanced prime because it is at equal distance from previous prime (87934207) and next prime (87934219).

It can be written as a sum of positive squares in only one way, i.e., 87928129 + 6084 = 9377^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 87934213 - 2¹⁷ = 87803141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87934219) 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, 43967106 + 43967107.

It is an arithmetic number, because the mean of its divisors is an integer number (43967107).

Almost surely, 2^87934213 is an apocalyptic number.

It is an amenable number.

87934213 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934213 is an equidigital number, since it uses as much as digits as its factorization.

87934213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 87934213 is about 9377.3244051808. The cubic root of 87934213 is about 444.6851503468.

The spelling of 87934213 in words is "eighty-seven million, nine hundred thirty-four thousand, two hundred thirteen".