87934247 has 2 divisors, whose sum is σ = 87934248. Its totient is φ = 87934246.

The previous prime is 87934243. The next prime is 87934289. The reversal of 87934247 is 74243978.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87934247 - 2² = 87934243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87934198 and 87934207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87934243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43967123 + 43967124.

It is an arithmetic number, because the mean of its divisors is an integer number (43967124).

Almost surely, 2^87934247 is an apocalyptic number.

87934247 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934247 is an equidigital number, since it uses as much as digits as its factorization.

87934247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 44.

The square root of 87934247 is about 9377.3262180645. The cubic root of 87934247 is about 444.6852076597.

The spelling of 87934247 in words is "eighty-seven million, nine hundred thirty-four thousand, two hundred forty-seven".