404443973 has 2 divisors, whose sum is σ = 404443974. Its totient is φ = 404443972.

The previous prime is 404443951. The next prime is 404443981. The reversal of 404443973 is 379344404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220760164 + 183683809 = 14858^2 + 13553^2 .

It is a cyclic number.

It is not a de Polignac number, because 404443973 - 2²² = 400249669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404443933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202221986 + 202221987.

It is an arithmetic number, because the mean of its divisors is an integer number (202221987).

Almost surely, 2^404443973 is an apocalyptic number.

It is an amenable number.

404443973 is a deficient number, since it is larger than the sum of its proper divisors (1).

404443973 is an equidigital number, since it uses as much as digits as its factorization.

404443973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 38.

The square root of 404443973 is about 20110.7924508210. The cubic root of 404443973 is about 739.5248794531.

The spelling of 404443973 in words is "four hundred four million, four hundred forty-three thousand, nine hundred seventy-three".