40444043 has 4 divisors (see below), whose sum is σ = 40533000. Its totient is φ = 40355088.

The previous prime is 40444031. The next prime is 40444091. The reversal of 40444043 is 34044404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40444043 - 2⁸ = 40443787 is a prime.

It is a super-2 number, since 2×40444043² = 3271441228371698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40444013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43793 + ... + 44706.

It is an arithmetic number, because the mean of its divisors is an integer number (10133250).

Almost surely, 2^40444043 is an apocalyptic number.

40444043 is a deficient number, since it is larger than the sum of its proper divisors (88957).

40444043 is an equidigital number, since it uses as much as digits as its factorization.

40444043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88956.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 40444043 is about 6359.5631139254. The cubic root of 40444043 is about 343.2560399313.

Adding to 40444043 its reverse (34044404), we get a palindrome (74488447).

The spelling of 40444043 in words is "forty million, four hundred forty-four thousand, forty-three".