401220445 has 16 divisors (see below), whose sum is σ = 499806720. Its totient is φ = 308865600.

The previous prime is 401220437. The next prime is 401220467. The reversal of 401220445 is 544022104.

It is a happy number.

It is not a de Polignac number, because 401220445 - 2³ = 401220437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20515 + ... + 34975.

It is an arithmetic number, because the mean of its divisors is an integer number (31237920).

Almost surely, 2^401220445 is an apocalyptic number.

It is an amenable number.

401220445 is a deficient number, since it is larger than the sum of its proper divisors (98586275).

401220445 is a wasteful number, since it uses less digits than its factorization.

401220445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14676.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 401220445 is about 20030.4878872183. The cubic root of 401220445 is about 737.5548985275.

Adding to 401220445 its reverse (544022104), we get a palindrome (945242549).

The spelling of 401220445 in words is "four hundred one million, two hundred twenty thousand, four hundred forty-five".