549449099 has 2 divisors, whose sum is σ = 549449100. Its totient is φ = 549449098.

The previous prime is 549449081. The next prime is 549449101. The reversal of 549449099 is 990944945.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549449099 is a prime.

Together with 549449101, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 549449099.

It is not a weakly prime, because it can be changed into another prime (549449009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274724549 + 274724550.

It is an arithmetic number, because the mean of its divisors is an integer number (274724550).

Almost surely, 2^549449099 is an apocalyptic number.

549449099 is a deficient number, since it is larger than the sum of its proper divisors (1).

549449099 is an equidigital number, since it uses as much as digits as its factorization.

549449099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 549449099 is about 23440.3306077367. The cubic root of 549449099 is about 819.0476247263.

The spelling of 549449099 in words is "five hundred forty-nine million, four hundred forty-nine thousand, ninety-nine".