5439817845 has 320 divisors, whose sum is σ = 13328105472. Its totient is φ = 2052864000.

The previous prime is 5439817841. The next prime is 5439817849. The reversal of 5439817845 is 5487189345.

5439817845 is a `hidden beast` number, since 543 + 9 + 8 + 17 + 84 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (5439817841) and next prime (5439817849).

It is not a de Polignac number, because 5439817845 - 2² = 5439817841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5439817791 and 5439817800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5439817841) by changing a digit.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 16434330 + ... + 16434660.

Almost surely, 2^5439817845 is an apocalyptic number.

5439817845 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5439817845 is an abundant number, since it is smaller than the sum of its proper divisors (7888287627).

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

5439817845 is a wasteful number, since it uses less digits than its factorization.

5439817845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 405 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 5439817845 is about 73755.1208052702. The cubic root of 5439817845 is about 1758.7122386317.

The spelling of 5439817845 in words is "five billion, four hundred thirty-nine million, eight hundred seventeen thousand, eight hundred forty-five".