5439540 has 24 divisors (see below), whose sum is σ = 15230880. Its totient is φ = 1450528.

The previous prime is 5439527. The next prime is 5439547. The reversal of 5439540 is 459345.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5439498 and 5439507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5439547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45270 + ... + 45389.

It is an arithmetic number, because the mean of its divisors is an integer number (634620).

Almost surely, 2^5439540 is an apocalyptic number.

It is an amenable number.

5439540 is an abundant number, since it is smaller than the sum of its proper divisors (9791340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5439540 is a wasteful number, since it uses less digits than its factorization.

5439540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90671 (or 90669 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 5439540 is about 2332.2821441670. The cubic root of 5439540 is about 175.8682295367.

The spelling of 5439540 in words is "five million, four hundred thirty-nine thousand, five hundred forty".