40144445 has 16 divisors (see below), whose sum is σ = 53975808. Its totient is φ = 28405440.

The previous prime is 40144421. The next prime is 40144459. The reversal of 40144445 is 54444104.

40144445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40144445 - 2¹⁴ = 40128061 is a prime.

It is a super-2 number, since 2×40144445² = 3223152928716050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7829 + ... + 11898.

It is an arithmetic number, because the mean of its divisors is an integer number (3373488).

Almost surely, 2^40144445 is an apocalyptic number.

It is an amenable number.

40144445 is a deficient number, since it is larger than the sum of its proper divisors (13831363).

40144445 is a wasteful number, since it uses less digits than its factorization.

40144445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19780.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 40144445 is about 6335.9644096223. The cubic root of 40144445 is about 342.4063572649.

Adding to 40144445 its reverse (54444104), we get a palindrome (94588549).

The spelling of 40144445 in words is "forty million, one hundred forty-four thousand, four hundred forty-five".