87934243 has 2 divisors, whose sum is σ = 87934244. Its totient is φ = 87934242.

The previous prime is 87934229. The next prime is 87934247. The reversal of 87934243 is 34243978.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87934243 - 2¹³ = 87926051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87934196 and 87934205.

It is not a weakly prime, because it can be changed into another prime (87934247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43967121 + 43967122.

It is an arithmetic number, because the mean of its divisors is an integer number (43967122).

Almost surely, 2^87934243 is an apocalyptic number.

87934243 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934243 is an equidigital number, since it uses as much as digits as its factorization.

87934243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 87934243 is about 9377.3260047841. The cubic root of 87934243 is about 444.6852009170.

The spelling of 87934243 in words is "eighty-seven million, nine hundred thirty-four thousand, two hundred forty-three".