404479123 has 2 divisors, whose sum is σ = 404479124. Its totient is φ = 404479122.

The previous prime is 404479111. The next prime is 404479189. The reversal of 404479123 is 321974404.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404479123 - 2⁵ = 404479091 is a prime.

It is not a weakly prime, because it can be changed into another prime (404479223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202239561 + 202239562.

It is an arithmetic number, because the mean of its divisors is an integer number (202239562).

Almost surely, 2^404479123 is an apocalyptic number.

404479123 is a deficient number, since it is larger than the sum of its proper divisors (1).

404479123 is an equidigital number, since it uses as much as digits as its factorization.

404479123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 404479123 is about 20111.6663407088. Note that the first 3 decimals coincide. The cubic root of 404479123 is about 739.5463027306.

The spelling of 404479123 in words is "four hundred four million, four hundred seventy-nine thousand, one hundred twenty-three".