5991454391 has 32 divisors (see below), whose sum is σ = 6897235968. Its totient is φ = 5161685760.

The previous prime is 5991454367. The next prime is 5991454393. The reversal of 5991454391 is 1934541995.

It is not a de Polignac number, because 5991454391 - 2²⁶ = 5924345527 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5991454393) 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 31 ways as a sum of consecutive naturals, for example, 8670356 + ... + 8671046.

It is an arithmetic number, because the mean of its divisors is an integer number (215538624).

Almost surely, 2^5991454391 is an apocalyptic number.

5991454391 is a deficient number, since it is larger than the sum of its proper divisors (905781577).

5991454391 is a wasteful number, since it uses less digits than its factorization.

5991454391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its digits is 874800, while the sum is 50.

The square root of 5991454391 is about 77404.4855999961. The cubic root of 5991454391 is about 1816.2574939358.

The spelling of 5991454391 in words is "five billion, nine hundred ninety-one million, four hundred fifty-four thousand, three hundred ninety-one".