40444000 has 48 divisors (see below), whose sum is σ = 99380736. Its totient is φ = 16176000.

The previous prime is 40443937. The next prime is 40444007. The reversal of 40444000 is 44404.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40444007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056 + ... + 9055.

It is an arithmetic number, because the mean of its divisors is an integer number (2070432).

Almost surely, 2^40444000 is an apocalyptic number.

40444000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40444000 is an abundant number, since it is smaller than the sum of its proper divisors (58936736).

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

40444000 is a wasteful number, since it uses less digits than its factorization.

40444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10136 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40444000 is about 6359.5597331891. The cubic root of 40444000 is about 343.2559182816.

Adding to 40444000 its reverse (44404), we get a palindrome (40488404).

The spelling of 40444000 in words is "forty million, four hundred forty-four thousand".