87930793 has 2 divisors, whose sum is σ = 87930794. Its totient is φ = 87930792.

The previous prime is 87930719. The next prime is 87930809. The reversal of 87930793 is 39703978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84787264 + 3143529 = 9208^2 + 1773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87930793 is a prime.

It is not a weakly prime, because it can be changed into another prime (87930593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43965396 + 43965397.

It is an arithmetic number, because the mean of its divisors is an integer number (43965397).

Almost surely, 2^87930793 is an apocalyptic number.

It is an amenable number.

87930793 is a deficient number, since it is larger than the sum of its proper divisors (1).

87930793 is an equidigital number, since it uses as much as digits as its factorization.

87930793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 87930793 is about 9377.1420486201. The cubic root of 87930793 is about 444.6793852682.

The spelling of 87930793 in words is "eighty-seven million, nine hundred thirty thousand, seven hundred ninety-three".