40365005 has 4 divisors (see below), whose sum is σ = 48438012. Its totient is φ = 32292000.

The previous prime is 40364999. The next prime is 40365019. The reversal of 40365005 is 50056304.

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 19333609 + 21031396 = 4397^2 + 4586^2 .

It is not a de Polignac number, because 40365005 - 2¹² = 40360909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4036496 + ... + 4036505.

It is an arithmetic number, because the mean of its divisors is an integer number (12109503).

Almost surely, 2^40365005 is an apocalyptic number.

It is an amenable number.

40365005 is a deficient number, since it is larger than the sum of its proper divisors (8073007).

40365005 is an equidigital number, since it uses as much as digits as its factorization.

40365005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8073006.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 40365005 is about 6353.3459688577. The cubic root of 40365005 is about 343.0322907605.

The spelling of 40365005 in words is "forty million, three hundred sixty-five thousand, five".