40209530 has 16 divisors (see below), whose sum is σ = 73055520. Its totient is φ = 15933072.

The previous prime is 40209469. The next prime is 40209541. The reversal of 40209530 is 3590204.

40209530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40209496 and 40209505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17720 + ... + 19859.

It is an arithmetic number, because the mean of its divisors is an integer number (4565970).

Almost surely, 2^40209530 is an apocalyptic number.

40209530 is a deficient number, since it is larger than the sum of its proper divisors (32845990).

40209530 is a wasteful number, since it uses less digits than its factorization.

40209530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37693.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 40209530 is about 6341.0984852784. The cubic root of 40209530 is about 342.5913017820.

Adding to 40209530 its reverse (3590204), we get a palindrome (43799734).

The spelling of 40209530 in words is "forty million, two hundred nine thousand, five hundred thirty".