40304065 has 4 divisors (see below), whose sum is σ = 48364884. Its totient is φ = 32243248.

The previous prime is 40304057. The next prime is 40304081. The reversal of 40304065 is 56040304.

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 9290304 + 31013761 = 3048^2 + 5569^2 .

It is a cyclic number.

It is not a de Polignac number, because 40304065 - 2³ = 40304057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4030402 + ... + 4030411.

It is an arithmetic number, because the mean of its divisors is an integer number (12091221).

Almost surely, 2^40304065 is an apocalyptic number.

It is an amenable number.

40304065 is a deficient number, since it is larger than the sum of its proper divisors (8060819).

40304065 is an equidigital number, since it uses as much as digits as its factorization.

40304065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060818.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40304065 is about 6348.5482592479. The cubic root of 40304065 is about 342.8595758343.

Adding to 40304065 its reverse (56040304), we get a palindrome (96344369).

The spelling of 40304065 in words is "forty million, three hundred four thousand, sixty-five".