543989997 has 12 divisors (see below), whose sum is σ = 819927264. Its totient is φ = 346892040.

The previous prime is 543989977. The next prime is 543990011. The reversal of 543989997 is 799989345.

It is a happy number.

543989997 is a `hidden beast` number, since 543 + 9 + 89 + 9 + 9 + 7 = 666.

It is not a de Polignac number, because 543989997 - 2¹⁵ = 543957229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543989977) 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 11 ways as a sum of consecutive naturals, for example, 1313779 + ... + 1314192.

It is an arithmetic number, because the mean of its divisors is an integer number (68327272).

Almost surely, 2^543989997 is an apocalyptic number.

It is an amenable number.

543989997 is a deficient number, since it is larger than the sum of its proper divisors (275937267).

543989997 is a wasteful number, since it uses less digits than its factorization.

543989997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2628000 (or 2627997 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The square root of 543989997 is about 23323.5931408520. The cubic root of 543989997 is about 816.3260168239.

The spelling of 543989997 in words is "five hundred forty-three million, nine hundred eighty-nine thousand, nine hundred ninety-seven".