4001143473 has 14 divisors (see below), whose sum is σ = 5998972034. Its totient is φ = 2667428496.

The previous prime is 4001143463. The next prime is 4001143483. The reversal of 4001143473 is 3743411004.

It is an interprime number because it is at equal distance from previous prime (4001143463) and next prime (4001143483).

It can be written as a sum of positive squares in only one way, i.e., 2438680689 + 1562462784 = 49383^2 + 39528^2 .

It is not a de Polignac number, because 4001143473 - 2⁵ = 4001143441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001143403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2743540 + ... + 2744997.

Almost surely, 2^4001143473 is an apocalyptic number.

It is an amenable number.

4001143473 is a deficient number, since it is larger than the sum of its proper divisors (1997828561).

4001143473 is an frugal number, since it uses more digits than its factorization.

4001143473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488555 (or 5488540 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 4001143473 is about 63254.5925052087. The cubic root of 4001143473 is about 1587.5523000770.

Adding to 4001143473 its reverse (3743411004), we get a palindrome (7744554477).

The spelling of 4001143473 in words is "four billion, one million, one hundred forty-three thousand, four hundred seventy-three".