400220341 has 4 divisors (see below), whose sum is σ = 423762732. Its totient is φ = 376677952.

The previous prime is 400220333. The next prime is 400220357. The reversal of 400220341 is 143022004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224100900 + 176119441 = 14970^2 + 13271^2 .

It is a cyclic number.

It is not a de Polignac number, because 400220341 - 2³ = 400220333 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 (400220371) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11771170 + ... + 11771203.

It is an arithmetic number, because the mean of its divisors is an integer number (105940683).

Almost surely, 2^400220341 is an apocalyptic number.

It is an amenable number.

400220341 is a deficient number, since it is larger than the sum of its proper divisors (23542391).

400220341 is a wasteful number, since it uses less digits than its factorization.

400220341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23542390.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400220341 is about 20005.5077666127. The cubic root of 400220341 is about 736.9415654247.

Adding to 400220341 its reverse (143022004), we get a palindrome (543242345).

The spelling of 400220341 in words is "four hundred million, two hundred twenty thousand, three hundred forty-one".