5309980021 has 4 divisors (see below), whose sum is σ = 5384768544. Its totient is φ = 5235191500.

The previous prime is 5309980019. The next prime is 5309980037. The reversal of 5309980021 is 1200899035.

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 5309980021 - 2¹ = 5309980019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5309981021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37394155 + ... + 37394296.

It is an arithmetic number, because the mean of its divisors is an integer number (1346192136).

Almost surely, 2^5309980021 is an apocalyptic number.

It is an amenable number.

5309980021 is a deficient number, since it is larger than the sum of its proper divisors (74788523).

5309980021 is an equidigital number, since it uses as much as digits as its factorization.

5309980021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74788522.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 5309980021 is about 72869.6097217489. The cubic root of 5309980021 is about 1744.6070735952.

The spelling of 5309980021 in words is "five billion, three hundred nine million, nine hundred eighty thousand, twenty-one".