404040004445 has 128 divisors (see below), whose sum is σ = 668979855360. Its totient is φ = 226370580480.

The previous prime is 404040004427. The next prime is 404040004451. The reversal of 404040004445 is 544400040404.

It is not a de Polignac number, because 404040004445 - 2¹⁶ = 404039938909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 108232799 + ... + 108236531.

It is an arithmetic number, because the mean of its divisors is an integer number (5226405120).

Almost surely, 2^404040004445 is an apocalyptic number.

It is an amenable number.

404040004445 is a deficient number, since it is larger than the sum of its proper divisors (264939850915).

404040004445 is a wasteful number, since it uses less digits than its factorization.

404040004445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4515.

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 404040004445 its reverse (544400040404), we get a palindrome (948440044849).

The spelling of 404040004445 in words is "four hundred four billion, forty million, four thousand, four hundred forty-five".