5621997459 has 8 divisors (see below), whose sum is σ = 8072611792. Its totient is φ = 3459690720.

The previous prime is 5621997443. The next prime is 5621997463. The reversal of 5621997459 is 9547991265.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5621997459 - 2⁴ = 5621997443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5621997399 and 5621997408.

It is not an unprimeable number, because it can be changed into a prime (5621997439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72076852 + ... + 72076929.

It is an arithmetic number, because the mean of its divisors is an integer number (1009076474).

Almost surely, 2^5621997459 is an apocalyptic number.

5621997459 is a deficient number, since it is larger than the sum of its proper divisors (2450614333).

5621997459 is a wasteful number, since it uses less digits than its factorization.

5621997459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144153797.

The product of its digits is 6123600, while the sum is 57.

The square root of 5621997459 is about 74979.9803881009. The cubic root of 5621997459 is about 1778.1301598371.

The spelling of 5621997459 in words is "five billion, six hundred twenty-one million, nine hundred ninety-seven thousand, four hundred fifty-nine".