404134429 has 2 divisors, whose sum is σ = 404134430. Its totient is φ = 404134428.

The previous prime is 404134411. The next prime is 404134453. The reversal of 404134429 is 924431404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 369677529 + 34456900 = 19227^2 + 5870^2 .

It is a cyclic number.

It is not a de Polignac number, because 404134429 - 2¹⁵ = 404101661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404134429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404134729) 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, 202067214 + 202067215.

It is an arithmetic number, because the mean of its divisors is an integer number (202067215).

Almost surely, 2^404134429 is an apocalyptic number.

It is an amenable number.

404134429 is a deficient number, since it is larger than the sum of its proper divisors (1).

404134429 is an equidigital number, since it uses as much as digits as its factorization.

404134429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 404134429 is about 20103.0950104704. The cubic root of 404134429 is about 739.3361644681.

The spelling of 404134429 in words is "four hundred four million, one hundred thirty-four thousand, four hundred twenty-nine".