404740417447 has 2 divisors, whose sum is σ = 404740417448. Its totient is φ = 404740417446.

The previous prime is 404740417429. The next prime is 404740417453. The reversal of 404740417447 is 744714047404.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404740417447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404740417397 and 404740417406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404740417457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202370208723 + 202370208724.

It is an arithmetic number, because the mean of its divisors is an integer number (202370208724).

Almost surely, 2^404740417447 is an apocalyptic number.

404740417447 is a deficient number, since it is larger than the sum of its proper divisors (1).

404740417447 is an equidigital number, since it uses as much as digits as its factorization.

404740417447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1404928, while the sum is 46.

The spelling of 404740417447 in words is "four hundred four billion, seven hundred forty million, four hundred seventeen thousand, four hundred forty-seven".