5406543999 has 12 divisors (see below), whose sum is σ = 7889963536. Its totient is φ = 3567203712.

The previous prime is 5406543943. The next prime is 5406544027. The reversal of 5406543999 is 9993456045.

5406543999 is a `hidden beast` number, since 5 + 4 + 0 + 6 + 543 + 9 + 99 = 666.

It is not a de Polignac number, because 5406543999 - 2⁹ = 5406543487 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 (5406543929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3095659 + ... + 3097404.

Almost surely, 2^5406543999 is an apocalyptic number.

5406543999 is a deficient number, since it is larger than the sum of its proper divisors (2483419537).

5406543999 is a wasteful number, since it uses less digits than its factorization.

5406543999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193166 (or 6193163 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The square root of 5406543999 is about 73529.2050752624. The cubic root of 5406543999 is about 1755.1190519964.

The spelling of 5406543999 in words is "five billion, four hundred six million, five hundred forty-three thousand, nine hundred ninety-nine".