404769247 has 2 divisors, whose sum is σ = 404769248. Its totient is φ = 404769246.

The previous prime is 404769229. The next prime is 404769259. The reversal of 404769247 is 742967404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404769247 - 2⁷ = 404769119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404769947) 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, 202384623 + 202384624.

It is an arithmetic number, because the mean of its divisors is an integer number (202384624).

Almost surely, 2^404769247 is an apocalyptic number.

404769247 is a deficient number, since it is larger than the sum of its proper divisors (1).

404769247 is an equidigital number, since it uses as much as digits as its factorization.

404769247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 404769247 is about 20118.8778762634. The cubic root of 404769247 is about 739.7230805831.

The spelling of 404769247 in words is "four hundred four million, seven hundred sixty-nine thousand, two hundred forty-seven".