87437393 has 2 divisors, whose sum is σ = 87437394. Its totient is φ = 87437392.

The previous prime is 87437381. The next prime is 87437459. The reversal of 87437393 is 39373478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76335169 + 11102224 = 8737^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 87437393 - 2¹⁰ = 87436369 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87437323) 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, 43718696 + 43718697.

It is an arithmetic number, because the mean of its divisors is an integer number (43718697).

Almost surely, 2^87437393 is an apocalyptic number.

It is an amenable number.

87437393 is a deficient number, since it is larger than the sum of its proper divisors (1).

87437393 is an equidigital number, since it uses as much as digits as its factorization.

87437393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The square root of 87437393 is about 9350.7963831965. The cubic root of 87437393 is about 443.8460917870.

The spelling of 87437393 in words is "eighty-seven million, four hundred thirty-seven thousand, three hundred ninety-three".