549363869 has 2 divisors, whose sum is σ = 549363870. Its totient is φ = 549363868.

The previous prime is 549363863. The next prime is 549363877. The reversal of 549363869 is 968363945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549339844 + 24025 = 23438^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 549363869 - 2⁸ = 549363613 is a prime.

It is a super-2 number, since 2×549363869² = 603601321125298322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 549363869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549363863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274681934 + 274681935.

It is an arithmetic number, because the mean of its divisors is an integer number (274681935).

Almost surely, 2^549363869 is an apocalyptic number.

It is an amenable number.

549363869 is a deficient number, since it is larger than the sum of its proper divisors (1).

549363869 is an equidigital number, since it uses as much as digits as its factorization.

549363869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 53.

The square root of 549363869 is about 23438.5125167959. The cubic root of 549363869 is about 819.0052725843.

The spelling of 549363869 in words is "five hundred forty-nine million, three hundred sixty-three thousand, eight hundred sixty-nine".