544782409 has 2 divisors, whose sum is σ = 544782410. Its totient is φ = 544782408.

The previous prime is 544782401. The next prime is 544782419. The reversal of 544782409 is 904287445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 540702009 + 4080400 = 23253^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 544782409 - 2³ = 544782401 is a prime.

It is not a weakly prime, because it can be changed into another prime (544782401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272391204 + 272391205.

It is an arithmetic number, because the mean of its divisors is an integer number (272391205).

Almost surely, 2^544782409 is an apocalyptic number.

It is an amenable number.

544782409 is a deficient number, since it is larger than the sum of its proper divisors (1).

544782409 is an equidigital number, since it uses as much as digits as its factorization.

544782409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 544782409 is about 23340.5743074158. The cubic root of 544782409 is about 816.7221961039.

The spelling of 544782409 in words is "five hundred forty-four million, seven hundred eighty-two thousand, four hundred nine".