549799619 has 2 divisors, whose sum is σ = 549799620. Its totient is φ = 549799618.

The previous prime is 549799541. The next prime is 549799633. The reversal of 549799619 is 916997945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549799619 is a prime.

It is a super-2 number, since 2×549799619² = 604559242105090322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (549799699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274899809 + 274899810.

It is an arithmetic number, because the mean of its divisors is an integer number (274899810).

Almost surely, 2^549799619 is an apocalyptic number.

549799619 is a deficient number, since it is larger than the sum of its proper divisors (1).

549799619 is an equidigital number, since it uses as much as digits as its factorization.

549799619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 59.

The square root of 549799619 is about 23447.8062726559. The cubic root of 549799619 is about 819.2217576566.

The spelling of 549799619 in words is "five hundred forty-nine million, seven hundred ninety-nine thousand, six hundred nineteen".