5421398447 has 8 divisors (see below), whose sum is σ = 5763178512. Its totient is φ = 5082160000.

The previous prime is 5421398443. The next prime is 5421398483. The reversal of 5421398447 is 7448931245.

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

It is a cyclic number.

It is not a de Polignac number, because 5421398447 - 2² = 5421398443 is a prime.

It is a super-2 number, since 2×5421398447² = 58783122242268023618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5421398443) 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, 631004 + ... + 639537.

It is an arithmetic number, because the mean of its divisors is an integer number (720397314).

Almost surely, 2^5421398447 is an apocalyptic number.

5421398447 is a deficient number, since it is larger than the sum of its proper divisors (341780065).

5421398447 is a wasteful number, since it uses less digits than its factorization.

5421398447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270809.

The product of its digits is 967680, while the sum is 47.

The square root of 5421398447 is about 73630.1463192896. The cubic root of 5421398447 is about 1756.7249752466.

The spelling of 5421398447 in words is "five billion, four hundred twenty-one million, three hundred ninety-eight thousand, four hundred forty-seven".