404134723 has 2 divisors, whose sum is σ = 404134724. Its totient is φ = 404134722.

The previous prime is 404134721. The next prime is 404134729. The reversal of 404134723 is 327431404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404134723 - 2¹ = 404134721 is a prime.

Together with 404134721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 404134691 and 404134700.

It is not a weakly prime, because it can be changed into another prime (404134721) 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, 202067361 + 202067362.

It is an arithmetic number, because the mean of its divisors is an integer number (202067362).

Almost surely, 2^404134723 is an apocalyptic number.

404134723 is a deficient number, since it is larger than the sum of its proper divisors (1).

404134723 is an equidigital number, since it uses as much as digits as its factorization.

404134723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 404134723 is about 20103.1023227760. The cubic root of 404134723 is about 739.3363437523.

The spelling of 404134723 in words is "four hundred four million, one hundred thirty-four thousand, seven hundred twenty-three".