4549821729 has 32 divisors (see below), whose sum is σ = 6302914560. Its totient is φ = 2917666752.

The previous prime is 4549821721. The next prime is 4549821737. The reversal of 4549821729 is 9271289454.

It is an interprime number because it is at equal distance from previous prime (4549821721) and next prime (4549821737).

It is not a de Polignac number, because 4549821729 - 2³ = 4549821721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4549821721) 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 31 ways as a sum of consecutive naturals, for example, 2545174 + ... + 2546960.

It is an arithmetic number, because the mean of its divisors is an integer number (196966080).

Almost surely, 2^4549821729 is an apocalyptic number.

It is an amenable number.

4549821729 is a deficient number, since it is larger than the sum of its proper divisors (1753092831).

4549821729 is a wasteful number, since it uses less digits than its factorization.

4549821729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149.

The product of its digits is 1451520, while the sum is 51.

The square root of 4549821729 is about 67452.3663706471. The cubic root of 4549821729 is about 1657.0341546693.

The spelling of 4549821729 in words is "four billion, five hundred forty-nine million, eight hundred twenty-one thousand, seven hundred twenty-nine".