5398281729 has 27 divisors (see below), whose sum is σ = 8235902883. Its totient is φ = 3406796064.

The previous prime is 5398281683. The next prime is 5398281761. The reversal of 5398281729 is 9271828935.

The square root of 5398281729 is 73473.

It is a perfect power (a square), and thus also a powerful number.

5398281729 is a `hidden beast` number, since 539 + 8 + 2 + 81 + 7 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4379395329 + 1018886400 = 66177^2 + 31920^2 .

It is not a de Polignac number, because 5398281729 - 2¹³ = 5398273537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5398211729) 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 26 ways as a sum of consecutive naturals, for example, 4187317 + ... + 4188605.

Almost surely, 2^5398281729 is an apocalyptic number.

5398281729 is the 73473-rd square number.

5398281729 is the 36737-th centered octagonal number.

It is an amenable number.

5398281729 is a deficient number, since it is larger than the sum of its proper divisors (2837621154).

5398281729 is an equidigital number, since it uses as much as digits as its factorization.

5398281729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 1311 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The cubic root of 5398281729 is about 1754.2245396729.

The spelling of 5398281729 in words is "five billion, three hundred ninety-eight million, two hundred eighty-one thousand, seven hundred twenty-nine".