40047215 has 8 divisors (see below), whose sum is σ = 51753408. Its totient is φ = 29573280.

The previous prime is 40047197. The next prime is 40047239. The reversal of 40047215 is 51274004.

40047215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40047215 - 2¹² = 40043119 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 307991 + ... + 308120.

It is an arithmetic number, because the mean of its divisors is an integer number (6469176).

Almost surely, 2^40047215 is an apocalyptic number.

40047215 is a deficient number, since it is larger than the sum of its proper divisors (11706193).

40047215 is a wasteful number, since it uses less digits than its factorization.

40047215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616129.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40047215 is about 6328.2868929909. The cubic root of 40047215 is about 342.1296972831.

The spelling of 40047215 in words is "forty million, forty-seven thousand, two hundred fifteen".