87934993 has 2 divisors, whose sum is σ = 87934994. Its totient is φ = 87934992.

The previous prime is 87934981. The next prime is 87935017. The reversal of 87934993 is 39943978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 27531009 = 7772^2 + 5247^2 .

It is a cyclic number.

It is not a de Polignac number, because 87934993 - 2⁵ = 87934961 is a prime.

It is a super-3 number, since 3×87934993³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87934993.

It is not a weakly prime, because it can be changed into another prime (87934933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43967496 + 43967497.

It is an arithmetic number, because the mean of its divisors is an integer number (43967497).

Almost surely, 2^87934993 is an apocalyptic number.

It is an amenable number.

87934993 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934993 is an equidigital number, since it uses as much as digits as its factorization.

87934993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 87934993 is about 9377.3659947770. The cubic root of 87934993 is about 444.6864651683.

The spelling of 87934993 in words is "eighty-seven million, nine hundred thirty-four thousand, nine hundred ninety-three".