549099407 has 4 divisors (see below), whose sum is σ = 549146280. Its totient is φ = 549052536.

The previous prime is 549099391. The next prime is 549099409. The reversal of 549099407 is 704990945.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 704990945 = 5 ⋅140998189.

It is a cyclic number.

It is not a de Polignac number, because 549099407 - 2⁴ = 549099391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549099409) 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, 11144 + ... + 34962.

It is an arithmetic number, because the mean of its divisors is an integer number (137286570).

Almost surely, 2^549099407 is an apocalyptic number.

549099407 is a deficient number, since it is larger than the sum of its proper divisors (46873).

549099407 is a wasteful number, since it uses less digits than its factorization.

549099407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46872.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 549099407 is about 23432.8702253907. The cubic root of 549099407 is about 818.8738293217.

The spelling of 549099407 in words is "five hundred forty-nine million, ninety-nine thousand, four hundred seven".