404878373 has 2 divisors, whose sum is σ = 404878374. Its totient is φ = 404878372.

The previous prime is 404878363. The next prime is 404878379. The reversal of 404878373 is 373878404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331895524 + 72982849 = 18218^2 + 8543^2 .

It is a cyclic number.

It is not a de Polignac number, because 404878373 - 2¹² = 404874277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404878379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202439186 + 202439187.

It is an arithmetic number, because the mean of its divisors is an integer number (202439187).

Almost surely, 2^404878373 is an apocalyptic number.

It is an amenable number.

404878373 is a deficient number, since it is larger than the sum of its proper divisors (1).

404878373 is an equidigital number, since it uses as much as digits as its factorization.

404878373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 44.

The square root of 404878373 is about 20121.5897234786. The cubic root of 404878373 is about 739.7895511860.

The spelling of 404878373 in words is "four hundred four million, eight hundred seventy-eight thousand, three hundred seventy-three".