400342214144441 has 4 divisors (see below), whose sum is σ = 404015078494500. Its totient is φ = 396669349794384.

The previous prime is 400342214144351. The next prime is 400342214144461. The reversal of 400342214144441 is 144441412243004.

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 176056276704400 + 224285937440041 = 13268620^2 + 14976179^2 .

It is a cyclic number.

It is not a de Polignac number, because 400342214144441 - 2³⁸ = 400067336237497 is a prime.

It is a super-2 number, since 2×400342214144441² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400342214144395 and 400342214144404.

It is not an unprimeable number, because it can be changed into a prime (400342214144461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836432174866 + ... + 1836432175083.

It is an arithmetic number, because the mean of its divisors is an integer number (101003769623625).

Almost surely, 2^{400342214144441} is an apocalyptic number.

It is an amenable number.

400342214144441 is a deficient number, since it is larger than the sum of its proper divisors (3672864350059).

400342214144441 is a wasteful number, since it uses less digits than its factorization.

400342214144441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672864350058.

The product of its (nonzero) digits is 196608, while the sum is 38.

Adding to 400342214144441 its reverse (144441412243004), we get a palindrome (544783626387445).

The spelling of 400342214144441 in words is "four hundred trillion, three hundred forty-two billion, two hundred fourteen million, one hundred forty-four thousand, four hundred forty-one".