545043839 has 4 divisors (see below), whose sum is σ = 545247600. Its totient is φ = 544840080.

The previous prime is 545043827. The next prime is 545043841. The reversal of 545043839 is 938340545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545043839 - 2¹⁶ = 544978303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545043796 and 545043805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545043539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97814 + ... + 103235.

It is an arithmetic number, because the mean of its divisors is an integer number (136311900).

Almost surely, 2^545043839 is an apocalyptic number.

545043839 is a deficient number, since it is larger than the sum of its proper divisors (203761).

545043839 is a wasteful number, since it uses less digits than its factorization.

545043839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203760.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 545043839 is about 23346.1739691968. The cubic root of 545043839 is about 816.8528180031.

The spelling of 545043839 in words is "five hundred forty-five million, forty-three thousand, eight hundred thirty-nine".