404352073 has 2 divisors, whose sum is σ = 404352074. Its totient is φ = 404352072.

The previous prime is 404352049. The next prime is 404352077. The reversal of 404352073 is 370253404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382710969 + 21641104 = 19563^2 + 4652^2 .

It is a cyclic number.

It is not a de Polignac number, because 404352073 - 2⁹ = 404351561 is a prime.

It is equal to p_21555901 and since 404352073 and 21555901 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (404352077) 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, 202176036 + 202176037.

It is an arithmetic number, because the mean of its divisors is an integer number (202176037).

Almost surely, 2^404352073 is an apocalyptic number.

It is an amenable number.

404352073 is a deficient number, since it is larger than the sum of its proper divisors (1).

404352073 is an equidigital number, since it uses as much as digits as its factorization.

404352073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 404352073 is about 20108.5074781795. The cubic root of 404352073 is about 739.4688622301.

The spelling of 404352073 in words is "four hundred four million, three hundred fifty-two thousand, seventy-three".