404252647 has 2 divisors, whose sum is σ = 404252648. Its totient is φ = 404252646.

The previous prime is 404252627. The next prime is 404252689. The reversal of 404252647 is 746252404.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404252647 is a prime.

It is a super-3 number, since 3×404252647³ (a number of 27 digits) contains 333 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404252627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202126323 + 202126324.

It is an arithmetic number, because the mean of its divisors is an integer number (202126324).

Almost surely, 2^404252647 is an apocalyptic number.

404252647 is a deficient number, since it is larger than the sum of its proper divisors (1).

404252647 is an equidigital number, since it uses as much as digits as its factorization.

404252647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 404252647 is about 20106.0350889975. The cubic root of 404252647 is about 739.4082480088.

The spelling of 404252647 in words is "four hundred four million, two hundred fifty-two thousand, six hundred forty-seven".