40804090 has 8 divisors (see below), whose sum is σ = 73447380. Its totient is φ = 16321632.

The previous prime is 40804087. The next prime is 40804111. The reversal of 40804090 is 9040804.

It can be written as a sum of positive squares in 2 ways, for example, as 36759969 + 4044121 = 6063^2 + 2011^2 .

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

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, 2040195 + ... + 2040214.

Almost surely, 2^40804090 is an apocalyptic number.

40804090 is a deficient number, since it is larger than the sum of its proper divisors (32643290).

40804090 is a wasteful number, since it uses less digits than its factorization.

40804090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080416.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 40804090 is about 6387.8079182142. The cubic root of 40804090 is about 344.2716272242.

Adding to 40804090 its reverse (9040804), we get a palindrome (49844894).

It can be divided in two parts, 408040 and 90, that multiplied together give a square (36723600 = 6060²).

The spelling of 40804090 in words is "forty million, eight hundred four thousand, ninety".