40244445 has 56 divisors (see below), whose sum is σ = 74000472. Its totient is φ = 20995200.

The previous prime is 40244441. The next prime is 40244461. The reversal of 40244445 is 54444204.

It is a happy number.

40244445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3992004 + 36252441 = 1998^2 + 6021^2 .

It is not a de Polignac number, because 40244445 - 2² = 40244441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40244441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 222255 + ... + 222435.

It is an arithmetic number, because the mean of its divisors is an integer number (1321437).

Almost surely, 2^40244445 is an apocalyptic number.

40244445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40244445 is a deficient number, since it is larger than the sum of its proper divisors (33756027).

40244445 is an equidigital number, since it uses as much as digits as its factorization.

40244445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 40244445 is about 6343.8509597878. The cubic root of 40244445 is about 342.6904334620.

Adding to 40244445 its reverse (54444204), we get a palindrome (94688649).

The spelling of 40244445 in words is "forty million, two hundred forty-four thousand, four hundred forty-five".