40395329 has 4 divisors (see below), whose sum is σ = 43502676. Its totient is φ = 37287984.

The previous prime is 40395319. The next prime is 40395343. The reversal of 40395329 is 92359304.

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 9314704 + 31080625 = 3052^2 + 5575^2 .

It is a cyclic number.

It is not a de Polignac number, because 40395329 - 2²⁰ = 39346753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40395319) 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, 1553654 + ... + 1553679.

It is an arithmetic number, because the mean of its divisors is an integer number (10875669).

Almost surely, 2^40395329 is an apocalyptic number.

It is an amenable number.

40395329 is a deficient number, since it is larger than the sum of its proper divisors (3107347).

40395329 is a wasteful number, since it uses less digits than its factorization.

40395329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107346.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 40395329 is about 6355.7319798745. The cubic root of 40395329 is about 343.1181696666.

The spelling of 40395329 in words is "forty million, three hundred ninety-five thousand, three hundred twenty-nine".