8043554789 has 2 divisors, whose sum is σ = 8043554790. Its totient is φ = 8043554788.

The previous prime is 8043554773. The next prime is 8043554797. The reversal of 8043554789 is 9874553408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7560302500 + 483252289 = 86950^2 + 21983^2 .

It is a cyclic number.

It is not a de Polignac number, because 8043554789 - 2⁴ = 8043554773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8043554789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8043557789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4021777394 + 4021777395.

It is an arithmetic number, because the mean of its divisors is an integer number (4021777395).

Almost surely, 2^8043554789 is an apocalyptic number.

It is an amenable number.

8043554789 is a deficient number, since it is larger than the sum of its proper divisors (1).

8043554789 is an equidigital number, since it uses as much as digits as its factorization.

8043554789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4838400, while the sum is 53.

The square root of 8043554789 is about 89685.8672757308. The cubic root of 8043554789 is about 2003.6229987271.

The spelling of 8043554789 in words is "eight billion, forty-three million, five hundred fifty-four thousand, seven hundred eighty-nine".