404034888821 has 2 divisors, whose sum is σ = 404034888822. Its totient is φ = 404034888820.

The previous prime is 404034888743. The next prime is 404034888871. The reversal of 404034888821 is 128888430404.

It is an a-pointer prime, because the next prime (404034888871) can be obtained adding 404034888821 to its sum of digits (50).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399536503921 + 4498384900 = 632089^2 + 67070^2 .

It is a cyclic number.

It is not a de Polignac number, because 404034888821 - 2²² = 404030694517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 404034888821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404034888871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202017444410 + 202017444411.

It is an arithmetic number, because the mean of its divisors is an integer number (202017444411).

Almost surely, 2^404034888821 is an apocalyptic number.

It is an amenable number.

404034888821 is a deficient number, since it is larger than the sum of its proper divisors (1).

404034888821 is an equidigital number, since it uses as much as digits as its factorization.

404034888821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1572864, while the sum is 50.

The spelling of 404034888821 in words is "four hundred four billion, thirty-four million, eight hundred eighty-eight thousand, eight hundred twenty-one".