400480400444 has 12 divisors (see below), whose sum is σ = 703632896568. Its totient is φ = 199442430000.

The previous prime is 400480400431. The next prime is 400480400461. The reversal of 400480400444 is 444004084004.

It is a super-2 number, since 2×400480400444² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400480400444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199441427 + ... + 199443434.

It is an arithmetic number, because the mean of its divisors is an integer number (58636074714).

Almost surely, 2^400480400444 is an apocalyptic number.

It is an amenable number.

400480400444 is a deficient number, since it is larger than the sum of its proper divisors (303152496124).

400480400444 is a wasteful number, since it uses less digits than its factorization.

400480400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398885116 (or 398885114 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 400480400444 its reverse (444004084004), we get a palindrome (844484484448).

The spelling of 400480400444 in words is "four hundred billion, four hundred eighty million, four hundred thousand, four hundred forty-four".