404754426221 has 2 divisors, whose sum is σ = 404754426222. Its totient is φ = 404754426220.

The previous prime is 404754426217. The next prime is 404754426269. The reversal of 404754426221 is 122624457404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277740594121 + 127013832100 = 527011^2 + 356390^2 .

It is a cyclic number.

It is not a de Polignac number, because 404754426221 - 2² = 404754426217 is a prime.

It is a super-2 number, since 2×404754426221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404754426721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202377213110 + 202377213111.

It is an arithmetic number, because the mean of its divisors is an integer number (202377213111).

Almost surely, 2^404754426221 is an apocalyptic number.

It is an amenable number.

404754426221 is a deficient number, since it is larger than the sum of its proper divisors (1).

404754426221 is an equidigital number, since it uses as much as digits as its factorization.

404754426221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 404754426221 in words is "four hundred four billion, seven hundred fifty-four million, four hundred twenty-six thousand, two hundred twenty-one".