83549389 has 16 divisors (see below), whose sum is σ = 104480640. Its totient is φ = 64906560.

The previous prime is 83549383. The next prime is 83549447. The reversal of 83549389 is 98394538.

It is a cyclic number.

It is not a de Polignac number, because 83549389 - 2⁹ = 83548877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83549383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27267 + ... + 30175.

It is an arithmetic number, because the mean of its divisors is an integer number (6530040).

Almost surely, 2^83549389 is an apocalyptic number.

It is an amenable number.

83549389 is a deficient number, since it is larger than the sum of its proper divisors (20931251).

83549389 is a wasteful number, since it uses less digits than its factorization.

83549389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300.

The product of its digits is 933120, while the sum is 49.

The square root of 83549389 is about 9140.5354875959. The cubic root of 83549389 is about 437.1673906264.

It can be divided in two parts, 83549 and 389, that added together give a palindrome (83938).

The spelling of 83549389 in words is "eighty-three million, five hundred forty-nine thousand, three hundred eighty-nine".