84541889 has 2 divisors, whose sum is σ = 84541890. Its totient is φ = 84541888.

The previous prime is 84541883. The next prime is 84541903. The reversal of 84541889 is 98814548.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 27040000 = 7583^2 + 5200^2 .

It is a cyclic number.

It is not a de Polignac number, because 84541889 - 2¹² = 84537793 is a prime.

It is not a weakly prime, because it can be changed into another prime (84541883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42270944 + 42270945.

It is an arithmetic number, because the mean of its divisors is an integer number (42270945).

Almost surely, 2^84541889 is an apocalyptic number.

It is an amenable number.

84541889 is a deficient number, since it is larger than the sum of its proper divisors (1).

84541889 is an equidigital number, since it uses as much as digits as its factorization.

84541889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 368640, while the sum is 47.

The square root of 84541889 is about 9194.6663343484. Note that the first 3 decimals coincide. The cubic root of 84541889 is about 438.8916474062.

The spelling of 84541889 in words is "eighty-four million, five hundred forty-one thousand, eight hundred eighty-nine".