40404444 has 96 divisors (see below), whose sum is σ = 105489216. Its totient is φ = 11980800.

The previous prime is 40404433. The next prime is 40404457. The reversal of 40404444 is 44440404.

40404444 is a modest number, since divided by 4444 gives 4040 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399994 + ... + 400094.

It is an arithmetic number, because the mean of its divisors is an integer number (1098846).

Almost surely, 2^40404444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40404444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52744608).

40404444 is an abundant number, since it is smaller than the sum of its proper divisors (65084772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40404444 is a wasteful number, since it uses less digits than its factorization.

40404444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 40404444 is about 6356.4490086840. The cubic root of 40404444 is about 343.1439753475.

Adding to 40404444 its reverse (44440404), we get a palindrome (84844848).

The spelling of 40404444 in words is "forty million, four hundred four thousand, four hundred forty-four".