404475949 has 2 divisors, whose sum is σ = 404475950. Its totient is φ = 404475948.

The previous prime is 404475919. The next prime is 404475977. The reversal of 404475949 is 949574404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 371332900 + 33143049 = 19270^2 + 5757^2 .

It is a cyclic number.

It is not a de Polignac number, because 404475949 - 2⁷ = 404475821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404475899 and 404475908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404475919) 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, 202237974 + 202237975.

It is an arithmetic number, because the mean of its divisors is an integer number (202237975).

Almost surely, 2^404475949 is an apocalyptic number.

It is an amenable number.

404475949 is a deficient number, since it is larger than the sum of its proper divisors (1).

404475949 is an equidigital number, since it uses as much as digits as its factorization.

404475949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 404475949 is about 20111.5874311303. The cubic root of 404475949 is about 739.5443682871.

The spelling of 404475949 in words is "four hundred four million, four hundred seventy-five thousand, nine hundred forty-nine".