40003995 has 16 divisors (see below), whose sum is σ = 64346112. Its totient is φ = 21222240.

The previous prime is 40003991. The next prime is 40004011. The reversal of 40003995 is 59930004.

40003995 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 40003995 - 2² = 40003991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40003991) 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 15 ways as a sum of consecutive naturals, for example, 4117 + ... + 9846.

It is an arithmetic number, because the mean of its divisors is an integer number (4021632).

Almost surely, 2^40003995 is an apocalyptic number.

40003995 is a deficient number, since it is larger than the sum of its proper divisors (24342117).

40003995 is a wasteful number, since it uses less digits than its factorization.

40003995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14162.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 40003995 is about 6324.8711449325. The cubic root of 40003995 is about 342.0065745462.

Adding to 40003995 its reverse (59930004), we get a palindrome (99933999).

The spelling of 40003995 in words is "forty million, three thousand, nine hundred ninety-five".