404751227 has 2 divisors, whose sum is σ = 404751228. Its totient is φ = 404751226.

The previous prime is 404751211. The next prime is 404751229. The reversal of 404751227 is 722157404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404751227 - 2⁴ = 404751211 is a prime.

Together with 404751229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 404751193 and 404751202.

It is not a weakly prime, because it can be changed into another prime (404751229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202375613 + 202375614.

It is an arithmetic number, because the mean of its divisors is an integer number (202375614).

Almost surely, 2^404751227 is an apocalyptic number.

404751227 is a deficient number, since it is larger than the sum of its proper divisors (1).

404751227 is an equidigital number, since it uses as much as digits as its factorization.

404751227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 404751227 is about 20118.4300331810. The cubic root of 404751227 is about 739.7121031288.

The spelling of 404751227 in words is "four hundred four million, seven hundred fifty-one thousand, two hundred twenty-seven".