40043505 has 16 divisors (see below), whose sum is σ = 64211904. Its totient is φ = 21309120.

The previous prime is 40043489. The next prime is 40043527. The reversal of 40043505 is 50534004.

It is a happy number.

It is not a de Polignac number, because 40043505 - 2⁴ = 40043489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4647 + ... + 10083.

It is an arithmetic number, because the mean of its divisors is an integer number (4013244).

Almost surely, 2^40043505 is an apocalyptic number.

It is an amenable number.

40043505 is a deficient number, since it is larger than the sum of its proper divisors (24168399).

40043505 is a wasteful number, since it uses less digits than its factorization.

40043505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 40043505 is about 6327.9937578983. The cubic root of 40043505 is about 342.1191319178.

Adding to 40043505 its reverse (50534004), we get a palindrome (90577509).

The spelling of 40043505 in words is "forty million, forty-three thousand, five hundred five".