549868937 has 2 divisors, whose sum is σ = 549868938. Its totient is φ = 549868936.

The previous prime is 549868901. The next prime is 549868997. The reversal of 549868937 is 739868945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433638976 + 116229961 = 20824^2 + 10781^2 .

It is a cyclic number.

It is not a de Polignac number, because 549868937 - 2²⁰ = 548820361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (549868997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274934468 + 274934469.

It is an arithmetic number, because the mean of its divisors is an integer number (274934469).

Almost surely, 2^549868937 is an apocalyptic number.

It is an amenable number.

549868937 is a deficient number, since it is larger than the sum of its proper divisors (1).

549868937 is an equidigital number, since it uses as much as digits as its factorization.

549868937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13063680, while the sum is 59.

The square root of 549868937 is about 23449.2843600823. The cubic root of 549868937 is about 819.2561850040.

The spelling of 549868937 in words is "five hundred forty-nine million, eight hundred sixty-eight thousand, nine hundred thirty-seven".