5439999 has 8 divisors (see below), whose sum is σ = 7449520. Its totient is φ = 3528576.

The previous prime is 5439997. The next prime is 5440007. The reversal of 5439999 is 9999345.

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

It is not a de Polignac number, because 5439999 - 2¹ = 5439997 is a prime.

It is a Duffinian number.

5439999 is a modest number, since divided by 9999 gives 543 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5439991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24394 + ... + 24615.

It is an arithmetic number, because the mean of its divisors is an integer number (931190).

Almost surely, 2^5439999 is an apocalyptic number.

5439999 is a deficient number, since it is larger than the sum of its proper divisors (2009521).

5439999 is a wasteful number, since it uses less digits than its factorization.

5439999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49049.

The product of its digits is 393660, while the sum is 48.

The square root of 5439999 is about 2332.3805435649. The cubic root of 5439999 is about 175.8731761098.

It can be divided in two parts, 5439 and 999, that multiplied together give a square (5433561 = 2331²).

The spelling of 5439999 in words is "five million, four hundred thirty-nine thousand, nine hundred ninety-nine".