404552429 has 2 divisors, whose sum is σ = 404552430. Its totient is φ = 404552428.

The previous prime is 404552377. The next prime is 404552431. The reversal of 404552429 is 924255404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377408329 + 27144100 = 19427^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 404552429 - 2¹⁶ = 404486893 is a prime.

Together with 404552431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404512429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202276214 + 202276215.

It is an arithmetic number, because the mean of its divisors is an integer number (202276215).

Almost surely, 2^404552429 is an apocalyptic number.

It is an amenable number.

404552429 is a deficient number, since it is larger than the sum of its proper divisors (1).

404552429 is an equidigital number, since it uses as much as digits as its factorization.

404552429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 404552429 is about 20113.4887326888. The cubic root of 404552429 is about 739.5909773944.

The spelling of 404552429 in words is "four hundred four million, five hundred fifty-two thousand, four hundred twenty-nine".