40304329 has 8 divisors (see below), whose sum is σ = 43657992. Its totient is φ = 36986880.

The previous prime is 40304323. The next prime is 40304401. The reversal of 40304329 is 92340304.

It can be written as a sum of positive squares in 4 ways, for example, as 425104 + 39879225 = 652^2 + 6315^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40304329 - 2⁹ = 40303817 is a prime.

It is a super-2 number, since 2×40304329² = 3248877872280482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40304323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6712 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (5457249).

Almost surely, 2^40304329 is an apocalyptic number.

It is an amenable number.

40304329 is a deficient number, since it is larger than the sum of its proper divisors (3353663).

40304329 is a wasteful number, since it uses less digits than its factorization.

40304329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18107.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 40304329 is about 6348.5690513690. The cubic root of 40304329 is about 342.8603244331.

The spelling of 40304329 in words is "forty million, three hundred four thousand, three hundred twenty-nine".