40403005 has 4 divisors (see below), whose sum is σ = 48483612. Its totient is φ = 32322400.

The previous prime is 40402997. The next prime is 40403009. The reversal of 40403005 is 50030404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28334329 + 12068676 = 5323^2 + 3474^2 .

It is not a de Polignac number, because 40403005 - 2³ = 40402997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40403005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403009) 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, 4040296 + ... + 4040305.

It is an arithmetic number, because the mean of its divisors is an integer number (12120903).

Almost surely, 2^40403005 is an apocalyptic number.

It is an amenable number.

40403005 is a deficient number, since it is larger than the sum of its proper divisors (8080607).

40403005 is an equidigital number, since it uses as much as digits as its factorization.

40403005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080606.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40403005 is about 6356.3358155466. The cubic root of 40403005 is about 343.1399016203.

Adding to 40403005 its reverse (50030404), we get a palindrome (90433409).

The spelling of 40403005 in words is "forty million, four hundred three thousand, five".