404134729 has 2 divisors, whose sum is σ = 404134730. Its totient is φ = 404134728.

The previous prime is 404134723. The next prime is 404134733. The reversal of 404134729 is 927431404.

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., 286455625 + 117679104 = 16925^2 + 10848^2 .

It is a cyclic number.

It is not a de Polignac number, because 404134729 - 2³ = 404134721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404134694 and 404134703.

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, 202067364 + 202067365.

It is an arithmetic number, because the mean of its divisors is an integer number (202067365).

Almost surely, 2^404134729 is an apocalyptic number.

It is an amenable number.

404134729 is a deficient number, since it is larger than the sum of its proper divisors (1).

404134729 is an equidigital number, since it uses as much as digits as its factorization.

404134729 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 404134729 is about 20103.1024720067. The cubic root of 404134729 is about 739.3363474112.

The spelling of 404134729 in words is "four hundred four million, one hundred thirty-four thousand, seven hundred twenty-nine".