400002411444 has 24 divisors (see below), whose sum is σ = 934705507680. Its totient is φ = 133138916064.

The previous prime is 400002411407. The next prime is 400002411493. The reversal of 400002411444 is 444114200004.

It is a happy number.

It is a super-2 number, since 2×400002411444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24394099 + ... + 24410490.

It is an arithmetic number, because the mean of its divisors is an integer number (38946062820).

Almost surely, 2^400002411444 is an apocalyptic number.

It is an amenable number.

400002411444 is an abundant number, since it is smaller than the sum of its proper divisors (534703096236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400002411444 is a wasteful number, since it uses less digits than its factorization.

400002411444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48805279 (or 48805277 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 400002411444 its reverse (444114200004), we get a palindrome (844116611448).

The spelling of 400002411444 in words is "four hundred billion, two million, four hundred eleven thousand, four hundred forty-four".