84589091 has 2 divisors, whose sum is σ = 84589092. Its totient is φ = 84589090.

The previous prime is 84589081. The next prime is 84589103. The reversal of 84589091 is 19098548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84589091 - 2¹⁴ = 84572707 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84589051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42294545 + 42294546.

It is an arithmetic number, because the mean of its divisors is an integer number (42294546).

Almost surely, 2^84589091 is an apocalyptic number.

84589091 is a deficient number, since it is larger than the sum of its proper divisors (1).

84589091 is an equidigital number, since it uses as much as digits as its factorization.

84589091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 84589091 is about 9197.2327903560. The cubic root of 84589091 is about 438.9733138615.

The spelling of 84589091 in words is "eighty-four million, five hundred eighty-nine thousand, ninety-one".