40443545 has 32 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 29272320.

The previous prime is 40443541. The next prime is 40443551. The reversal of 40443545 is 54534404.

40443545 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 40443545 - 2² = 40443541 is a prime.

It is a super-3 number, since 3×40443545³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (40443541) 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 31 ways as a sum of consecutive naturals, for example, 223355 + ... + 223535.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^40443545 is an apocalyptic number.

It is an amenable number.

40443545 is a deficient number, since it is larger than the sum of its proper divisors (13020775).

40443545 is a wasteful number, since it uses less digits than its factorization.

40443545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 40443545 is about 6359.5239601719. The cubic root of 40443545 is about 343.2546310529.

Adding to 40443545 its reverse (54534404), we get a palindrome (94977949).

The spelling of 40443545 in words is "forty million, four hundred forty-three thousand, five hundred forty-five".