400848448021 has 8 divisors (see below), whose sum is σ = 458125072704. Its totient is φ = 343574963520.

The previous prime is 400848447887. The next prime is 400848448037. The reversal of 400848448021 is 120844848004.

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

It is a cyclic number.

It is not a de Polignac number, because 400848448021 - 2¹¹ = 400848445973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400848448051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504835 + ... + 1027888.

It is an arithmetic number, because the mean of its divisors is an integer number (57265634088).

Almost surely, 2^400848448021 is an apocalyptic number.

It is an amenable number.

400848448021 is a deficient number, since it is larger than the sum of its proper divisors (57276624683).

400848448021 is a wasteful number, since it uses less digits than its factorization.

400848448021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570091.

The product of its (nonzero) digits is 262144, while the sum is 43.

The spelling of 400848448021 in words is "four hundred billion, eight hundred forty-eight million, four hundred forty-eight thousand, twenty-one".