40329505 has 4 divisors (see below), whose sum is σ = 48395412. Its totient is φ = 32263600.

The previous prime is 40329503. The next prime is 40329521. The reversal of 40329505 is 50592304.

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 5377761 + 34951744 = 2319^2 + 5912^2 .

It is not a de Polignac number, because 40329505 - 2¹ = 40329503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40329503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4032946 + ... + 4032955.

It is an arithmetic number, because the mean of its divisors is an integer number (12098853).

Almost surely, 2^40329505 is an apocalyptic number.

It is an amenable number.

40329505 is a deficient number, since it is larger than the sum of its proper divisors (8065907).

40329505 is an equidigital number, since it uses as much as digits as its factorization.

40329505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8065906.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 40329505 is about 6350.5515508497. The cubic root of 40329505 is about 342.9316985268.

The spelling of 40329505 in words is "forty million, three hundred twenty-nine thousand, five hundred five".