5809493021 has 2 divisors, whose sum is σ = 5809493022. Its totient is φ = 5809493020.

The previous prime is 5809492993. The next prime is 5809493069. The reversal of 5809493021 is 1203949085.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5774328121 + 35164900 = 75989^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 5809493021 - 2¹⁰ = 5809491997 is a prime.

It is a super-2 number, since 2×5809493021² = 67500418322095412882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5809493021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5809493621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2904746510 + 2904746511.

It is an arithmetic number, because the mean of its divisors is an integer number (2904746511).

Almost surely, 2^5809493021 is an apocalyptic number.

It is an amenable number.

5809493021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5809493021 is an equidigital number, since it uses as much as digits as its factorization.

5809493021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 5809493021 is about 76220.0303135600. The cubic root of 5809493021 is about 1797.6814820603.

The spelling of 5809493021 in words is "five billion, eight hundred nine million, four hundred ninety-three thousand, twenty-one".