544343909 has 2 divisors, whose sum is σ = 544343910. Its totient is φ = 544343908.

The previous prime is 544343903. The next prime is 544343941. The reversal of 544343909 is 909343445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278556100 + 265787809 = 16690^2 + 16303^2 .

It is a cyclic number.

It is not a de Polignac number, because 544343909 - 2¹⁶ = 544278373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544343903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272171954 + 272171955.

It is an arithmetic number, because the mean of its divisors is an integer number (272171955).

Almost surely, 2^544343909 is an apocalyptic number.

It is an amenable number.

544343909 is a deficient number, since it is larger than the sum of its proper divisors (1).

544343909 is an equidigital number, since it uses as much as digits as its factorization.

544343909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 544343909 is about 23331.1789029187. The cubic root of 544343909 is about 816.5030084012.

The spelling of 544343909 in words is "five hundred forty-four million, three hundred forty-three thousand, nine hundred nine".