440552993 has 2 divisors, whose sum is σ = 440552994. Its totient is φ = 440552992.

The previous prime is 440552933. The next prime is 440553031. The reversal of 440552993 is 399255044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328044544 + 112508449 = 18112^2 + 10607^2 .

It is a cyclic number.

It is not a de Polignac number, because 440552993 - 2⁶ = 440552929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440552993.

It is not a weakly prime, because it can be changed into another prime (440552933) 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, 220276496 + 220276497.

It is an arithmetic number, because the mean of its divisors is an integer number (220276497).

Almost surely, 2^440552993 is an apocalyptic number.

It is an amenable number.

440552993 is a deficient number, since it is larger than the sum of its proper divisors (1).

440552993 is an equidigital number, since it uses as much as digits as its factorization.

440552993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 440552993 is about 20989.3542778238. The cubic root of 440552993 is about 760.9089960438.

The spelling of 440552993 in words is "four hundred forty million, five hundred fifty-two thousand, nine hundred ninety-three".