404609477 has 2 divisors, whose sum is σ = 404609478. Its totient is φ = 404609476.

The previous prime is 404609453. The next prime is 404609497. The reversal of 404609477 is 774906404.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404572996 + 36481 = 20114^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 404609477 - 2⁸ = 404609221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404609497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202304738 + 202304739.

It is an arithmetic number, because the mean of its divisors is an integer number (202304739).

Almost surely, 2^404609477 is an apocalyptic number.

It is an amenable number.

404609477 is a deficient number, since it is larger than the sum of its proper divisors (1).

404609477 is an equidigital number, since it uses as much as digits as its factorization.

404609477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 404609477 is about 20114.9068354790. The cubic root of 404609477 is about 739.6257402582.

The spelling of 404609477 in words is "four hundred four million, six hundred nine thousand, four hundred seventy-seven".