5439816 has 24 divisors (see below), whose sum is σ = 14733030. Its totient is φ = 1813248.

The previous prime is 5439809. The next prime is 5439817. The reversal of 5439816 is 6189345.

It can be written as a sum of positive squares in only one way, i.e., 3348900 + 2090916 = 1830^2 + 1446^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×5439816² = 59183196227712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5439817) 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 5 ways as a sum of consecutive naturals, for example, 37705 + ... + 37848.

Almost surely, 2^5439816 is an apocalyptic number.

It is an amenable number.

5439816 is an abundant number, since it is smaller than the sum of its proper divisors (9293214).

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

5439816 is a wasteful number, since it uses less digits than its factorization.

5439816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75565 (or 75558 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 5439816 is about 2332.3413129300. The cubic root of 5439816 is about 175.8712039800.

The spelling of 5439816 in words is "five million, four hundred thirty-nine thousand, eight hundred sixteen".