5809634021 has 2 divisors, whose sum is σ = 5809634022. Its totient is φ = 5809634020.

The previous prime is 5809633987. The next prime is 5809634057. The reversal of 5809634021 is 1204369085.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5686668100 + 122965921 = 75410^2 + 11089^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5809634021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5809634071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2904817010 + 2904817011.

It is an arithmetic number, because the mean of its divisors is an integer number (2904817011).

Almost surely, 2^5809634021 is an apocalyptic number.

It is an amenable number.

5809634021 is a deficient number, since it is larger than the sum of its proper divisors (1).

5809634021 is an equidigital number, since it uses as much as digits as its factorization.

5809634021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 5809634021 is about 76220.9552616602. The cubic root of 5809634021 is about 1797.6960255576.

The spelling of 5809634021 in words is "five billion, eight hundred nine million, six hundred thirty-four thousand, twenty-one".