440449553 has 2 divisors, whose sum is σ = 440449554. Its totient is φ = 440449552.

The previous prime is 440449547. The next prime is 440449567. The reversal of 440449553 is 355944044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386397649 + 54051904 = 19657^2 + 7352^2 .

It is a cyclic number.

It is not a de Polignac number, because 440449553 - 2¹² = 440445457 is a prime.

It is not a weakly prime, because it can be changed into another prime (440449853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220224776 + 220224777.

It is an arithmetic number, because the mean of its divisors is an integer number (220224777).

Almost surely, 2^440449553 is an apocalyptic number.

It is an amenable number.

440449553 is a deficient number, since it is larger than the sum of its proper divisors (1).

440449553 is an equidigital number, since it uses as much as digits as its factorization.

440449553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 440449553 is about 20986.8900268715. The cubic root of 440449553 is about 760.8494386324.

The spelling of 440449553 in words is "four hundred forty million, four hundred forty-nine thousand, five hundred fifty-three".