40440444 has 24 divisors (see below), whose sum is σ = 102939648. Its totient is φ = 12254640.

The previous prime is 40440419. The next prime is 40440451. The reversal of 40440444 is 44404404.

It is a congruent number.

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, 153052 + ... + 153315.

It is an arithmetic number, because the mean of its divisors is an integer number (4289152).

Almost surely, 2^40440444 is an apocalyptic number.

40440444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40440444 is an abundant number, since it is smaller than the sum of its proper divisors (62499204).

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

40440444 is a wasteful number, since it uses less digits than its factorization.

40440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306385 (or 306383 counting only the distinct ones).

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

The square root of 40440444 is about 6359.2801479413. The cubic root of 40440444 is about 343.2458578374.

Adding to 40440444 its reverse (44404404), we get a palindrome (84844848).

The spelling of 40440444 in words is "forty million, four hundred forty thousand, four hundred forty-four".