404402247 has 16 divisors (see below), whose sum is σ = 600058080. Its totient is φ = 269176896.

The previous prime is 404402237. The next prime is 404402263. The reversal of 404402247 is 742204404.

It is not a de Polignac number, because 404402247 - 2¹⁰ = 404401223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 404402247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404402227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6163 + ... + 29099.

It is an arithmetic number, because the mean of its divisors is an integer number (37503630).

Almost surely, 2^404402247 is an apocalyptic number.

404402247 is a deficient number, since it is larger than the sum of its proper divisors (195655833).

404402247 is a wasteful number, since it uses less digits than its factorization.

404402247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23599 (or 23593 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 404402247 is about 20109.7550208848. The cubic root of 404402247 is about 739.4994466132.

The spelling of 404402247 in words is "four hundred four million, four hundred two thousand, two hundred forty-seven".