549868945 has 16 divisors (see below), whose sum is σ = 674242560. Its totient is φ = 430372800.

The previous prime is 549868937. The next prime is 549868997.

549868945 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 549868945 - 2³ = 549868937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549868945.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53536 + ... + 62974.

It is an arithmetic number, because the mean of its divisors is an integer number (42140160).

Almost surely, 2^549868945 is an apocalyptic number.

It is an amenable number.

549868945 is a deficient number, since it is larger than the sum of its proper divisors (124373615).

549868945 is a wasteful number, since it uses less digits than its factorization.

549868945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9696.

The product of its digits is 12441600, while the sum is 58.

The square root of 549868945 is about 23449.2845306632. The cubic root of 549868945 is about 819.2561889771.

The spelling of 549868945 in words is "five hundred forty-nine million, eight hundred sixty-eight thousand, nine hundred forty-five".