5391621391 has 8 divisors (see below), whose sum is σ = 6006581280. Its totient is φ = 4805264352.

The previous prime is 5391621379. The next prime is 5391621407. The reversal of 5391621391 is 1931261935.

5391621391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5391621391 - 2⁹ = 5391620879 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 (5391621331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7150315 + ... + 7151068.

It is an arithmetic number, because the mean of its divisors is an integer number (750822660).

Almost surely, 2^5391621391 is an apocalyptic number.

5391621391 is a deficient number, since it is larger than the sum of its proper divisors (614959889).

5391621391 is a wasteful number, since it uses less digits than its factorization.

5391621391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14301425.

The product of its digits is 43740, while the sum is 40.

The square root of 5391621391 is about 73427.6609391856. The cubic root of 5391621391 is about 1753.5027954014.

The spelling of 5391621391 in words is "five billion, three hundred ninety-one million, six hundred twenty-one thousand, three hundred ninety-one".