400480400443 has 4 divisors (see below), whose sum is σ = 400582489608. Its totient is φ = 400378311280.

The previous prime is 400480400431. The next prime is 400480400461. The reversal of 400480400443 is 344004084004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400480400443 is a prime.

It is a super-2 number, since 2×400480400443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400480400413) 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, 51038698 + ... + 51046543.

It is an arithmetic number, because the mean of its divisors is an integer number (100145622402).

Almost surely, 2^400480400443 is an apocalyptic number.

400480400443 is a deficient number, since it is larger than the sum of its proper divisors (102089165).

400480400443 is a wasteful number, since it uses less digits than its factorization.

400480400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102089164.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 400480400443 its reverse (344004084004), we get a palindrome (744484484447).

The spelling of 400480400443 in words is "four hundred billion, four hundred eighty million, four hundred thousand, four hundred forty-three".