549372919 has 2 divisors, whose sum is σ = 549372920. Its totient is φ = 549372918.

The previous prime is 549372913. The next prime is 549372977. The reversal of 549372919 is 919273945.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 549372919 - 2³ = 549372911 is a prime.

It is a super-2 number, since 2×549372919² = 603621208261161122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549372911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274686459 + 274686460.

It is an arithmetic number, because the mean of its divisors is an integer number (274686460).

Almost surely, 2^549372919 is an apocalyptic number.

549372919 is a deficient number, since it is larger than the sum of its proper divisors (1).

549372919 is an equidigital number, since it uses as much as digits as its factorization.

549372919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 49.

The square root of 549372919 is about 23438.7055743273. The cubic root of 549372919 is about 819.0097698810.

The spelling of 549372919 in words is "five hundred forty-nine million, three hundred seventy-two thousand, nine hundred nineteen".