408774226821 has 8 divisors (see below), whose sum is σ = 553167113184. Its totient is φ = 268448745840.

The previous prime is 408774226799. The next prime is 408774226841. The reversal of 408774226821 is 128622477804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 408774226821 - 2¹⁷ = 408774095749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408774226841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1016851110 + ... + 1016851511.

It is an arithmetic number, because the mean of its divisors is an integer number (69145889148).

Almost surely, 2^408774226821 is an apocalyptic number.

It is an amenable number.

408774226821 is a deficient number, since it is larger than the sum of its proper divisors (144392886363).

408774226821 is a wasteful number, since it uses less digits than its factorization.

408774226821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033702691.

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 408774226821 in words is "four hundred eight billion, seven hundred seventy-four million, two hundred twenty-six thousand, eight hundred twenty-one".