44040440 has 32 divisors (see below), whose sum is σ = 100576080. Its totient is φ = 17352192.

The previous prime is 44040439. The next prime is 44040449. The reversal of 44040440 is 4404044.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44040449) 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, 5537 + ... + 10896.

Almost surely, 2^44040440 is an apocalyptic number.

44040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44040440 is an abundant number, since it is smaller than the sum of its proper divisors (56535640).

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

44040440 is a wasteful number, since it uses less digits than its factorization.

44040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16511 (or 16507 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 44040440 is about 6636.2971603146. The cubic root of 44040440 is about 353.1429574495.

44040440 divided by its sum of digits (20) gives a palindrome (2202022).

Adding to 44040440 its reverse (4404044), we get a palindrome (48444484).

The spelling of 44040440 in words is "forty-four million, forty thousand, four hundred forty".