543440897 has 4 divisors (see below), whose sum is σ = 543791040. Its totient is φ = 543090756.

The previous prime is 543440893. The next prime is 543440927. The reversal of 543440897 is 798044345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 543440897 - 2² = 543440893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (543440893) 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, 172733 + ... + 175850.

It is an arithmetic number, because the mean of its divisors is an integer number (135947760).

Almost surely, 2^543440897 is an apocalyptic number.

It is an amenable number.

543440897 is a deficient number, since it is larger than the sum of its proper divisors (350143).

543440897 is a wasteful number, since it uses less digits than its factorization.

543440897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350142.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 543440897 is about 23311.8188265094. The cubic root of 543440897 is about 816.0512596155.

The spelling of 543440897 in words is "five hundred forty-three million, four hundred forty thousand, eight hundred ninety-seven".