401844445 has 8 divisors (see below), whose sum is σ = 498841560. Its totient is φ = 310390080.

The previous prime is 401844437. The next prime is 401844449. The reversal of 401844445 is 544448104.

It can be written as a sum of positive squares in 4 ways, for example, as 125686521 + 276157924 = 11211^2 + 16618^2 .

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

It is not a de Polignac number, because 401844445 - 2³ = 401844437 is a prime.

It is a super-2 number, since 2×401844445² = 322957915954716050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401844445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401844449) 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 in 7 ways as a sum of consecutive naturals, for example, 1385526 + ... + 1385815.

It is an arithmetic number, because the mean of its divisors is an integer number (62355195).

Almost surely, 2^401844445 is an apocalyptic number.

It is an amenable number.

401844445 is a deficient number, since it is larger than the sum of its proper divisors (96997115).

401844445 is a wasteful number, since it uses less digits than its factorization.

401844445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771375.

The product of its (nonzero) digits is 40960, while the sum is 34.

The square root of 401844445 is about 20046.0580913056. The cubic root of 401844445 is about 737.9370623932.

The spelling of 401844445 in words is "four hundred one million, eight hundred forty-four thousand, four hundred forty-five".