8473553749 has 2 divisors, whose sum is σ = 8473553750. Its totient is φ = 8473553748.

The previous prime is 8473553723. The next prime is 8473553773. The reversal of 8473553749 is 9473553748.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7959851524 + 513702225 = 89218^2 + 22665^2 .

It is a cyclic number.

It is not a de Polignac number, because 8473553749 - 2¹⁵ = 8473520981 is a prime.

It is a super-2 number, since 2×8473553749² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8473553749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8473553789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4236776874 + 4236776875.

It is an arithmetic number, because the mean of its divisors is an integer number (4236776875).

Almost surely, 2^8473553749 is an apocalyptic number.

It is an amenable number.

8473553749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8473553749 is an equidigital number, since it uses as much as digits as its factorization.

8473553749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 55.

The square root of 8473553749 is about 92051.9079052683. The cubic root of 8473553749 is about 2038.7087937176.

Subtracting 8473553749 from its reverse (9473553748), we obtain a palindrome (999999999).

The spelling of 8473553749 in words is "eight billion, four hundred seventy-three million, five hundred fifty-three thousand, seven hundred forty-nine".