4020404402444 has 24 divisors (see below), whose sum is σ = 7048776803040. Its totient is φ = 2006471609984.

The previous prime is 4020404402429. The next prime is 4020404402491. The reversal of 4020404402444 is 4442044040204.

It is a self number, because there is not a number n which added to its sum of digits gives 4020404402444.

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, 4262342 + ... + 5119410.

It is an arithmetic number, because the mean of its divisors is an integer number (293699033460).

Almost surely, 2^{4020404402444} is an apocalyptic number.

It is an amenable number.

4020404402444 is a deficient number, since it is larger than the sum of its proper divisors (3028372400596).

4020404402444 is a wasteful number, since it uses less digits than its factorization.

4020404402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859249 (or 859247 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 4020404402444 its reverse (4442044040204), we get a palindrome (8462448442648).

The spelling of 4020404402444 in words is "four trillion, twenty billion, four hundred four million, four hundred two thousand, four hundred forty-four".