5539973991 has 16 divisors (see below), whose sum is σ = 7824519648. Its totient is φ = 3474560000.

The previous prime is 5539973981. The next prime is 5539974007. The reversal of 5539973991 is 1993799355.

It is a cyclic number.

It is not a de Polignac number, because 5539973991 - 2¹⁰ = 5539972967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5539973911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102241 + ... + 146741.

It is an arithmetic number, because the mean of its divisors is an integer number (489032478).

Almost surely, 2^5539973991 is an apocalyptic number.

5539973991 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

5539973991 is a deficient number, since it is larger than the sum of its proper divisors (2284545657).

5539973991 is a wasteful number, since it uses less digits than its factorization.

5539973991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46962.

The product of its digits is 10333575, while the sum is 60.

The square root of 5539973991 is about 74431.0015450551. The cubic root of 5539973991 is about 1769.4402765919.

The spelling of 5539973991 in words is "five billion, five hundred thirty-nine million, nine hundred seventy-three thousand, nine hundred ninety-one".