87084493 has 2 divisors, whose sum is σ = 87084494. Its totient is φ = 87084492.

The previous prime is 87084457. The next prime is 87084521. The reversal of 87084493 is 39448078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74425129 + 12659364 = 8627^2 + 3558^2 .

It is a cyclic number.

It is not a de Polignac number, because 87084493 - 2¹⁷ = 86953421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87084433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43542246 + 43542247.

It is an arithmetic number, because the mean of its divisors is an integer number (43542247).

Almost surely, 2^87084493 is an apocalyptic number.

It is an amenable number.

87084493 is a deficient number, since it is larger than the sum of its proper divisors (1).

87084493 is an equidigital number, since it uses as much as digits as its factorization.

87084493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 87084493 is about 9331.9072541469. The cubic root of 87084493 is about 443.2481611620.

The spelling of 87084493 in words is "eighty-seven million, eighty-four thousand, four hundred ninety-three".