5540821393 has 4 divisors (see below), whose sum is σ = 5634733680. Its totient is φ = 5446909108.

The previous prime is 5540821361. The next prime is 5540821423. The reversal of 5540821393 is 3931280455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5540821393 - 2⁵ = 5540821361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5540821313) 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 3 ways as a sum of consecutive naturals, for example, 46956055 + ... + 46956172.

It is an arithmetic number, because the mean of its divisors is an integer number (1408683420).

Almost surely, 2^5540821393 is an apocalyptic number.

It is an amenable number.

5540821393 is a deficient number, since it is larger than the sum of its proper divisors (93912287).

5540821393 is an equidigital number, since it uses as much as digits as its factorization.

5540821393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93912286.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 5540821393 is about 74436.6938612940. The cubic root of 5540821393 is about 1769.5304906607.

The spelling of 5540821393 in words is "five billion, five hundred forty million, eight hundred twenty-one thousand, three hundred ninety-three".