40044500 has 36 divisors (see below), whose sum is σ = 87767316. Its totient is φ = 15961200.

The previous prime is 40044479. The next prime is 40044509. The reversal of 40044500 is 544004.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1281424 + 38763076 = 1132^2 + 6226^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141359 + ... + 141641.

It is an arithmetic number, because the mean of its divisors is an integer number (2437981).

Almost surely, 2^40044500 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 40044500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43883658).

40044500 is an abundant number, since it is smaller than the sum of its proper divisors (47722816).

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

40044500 is an equidigital number, since it uses as much as digits as its factorization.

40044500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40044500 is about 6328.0723763244. The cubic root of 40044500 is about 342.1219655502.

Multiplying 40044500 by its product of nonzero digits (320), we get a square (12814240000 = 113200²).

Adding to 40044500 its reverse (544004), we get a palindrome (40588504).

The spelling of 40044500 in words is "forty million, forty-four thousand, five hundred".