84539087 has 2 divisors, whose sum is σ = 84539088. Its totient is φ = 84539086.

The previous prime is 84539057. The next prime is 84539093. The reversal of 84539087 is 78093548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84539087 - 2¹² = 84534991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84539027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42269543 + 42269544.

It is an arithmetic number, because the mean of its divisors is an integer number (42269544).

Almost surely, 2^84539087 is an apocalyptic number.

84539087 is a deficient number, since it is larger than the sum of its proper divisors (1).

84539087 is an equidigital number, since it uses as much as digits as its factorization.

84539087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 84539087 is about 9194.5139621407. The cubic root of 84539087 is about 438.8867985753.

The spelling of 84539087 in words is "eighty-four million, five hundred thirty-nine thousand, eighty-seven".