84469549 has 4 divisors (see below), whose sum is σ = 89438364. Its totient is φ = 79500736.

The previous prime is 84469537. The next prime is 84469601. The reversal of 84469549 is 94596448.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54493924 + 29975625 = 7382^2 + 5475^2 .

It is a cyclic number.

It is not a de Polignac number, because 84469549 - 2⁹ = 84469037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84469529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2484382 + ... + 2484415.

It is an arithmetic number, because the mean of its divisors is an integer number (22359591).

Almost surely, 2^84469549 is an apocalyptic number.

It is an amenable number.

84469549 is a deficient number, since it is larger than the sum of its proper divisors (4968815).

84469549 is a wasteful number, since it uses less digits than its factorization.

84469549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4968814.

The product of its digits is 1244160, while the sum is 49.

The square root of 84469549 is about 9190.7316901322. The cubic root of 84469549 is about 438.7664294733.

The spelling of 84469549 in words is "eighty-four million, four hundred sixty-nine thousand, five hundred forty-nine".