40000047 has 8 divisors (see below), whose sum is σ = 53753856. Its totient is φ = 26456472.

The previous prime is 40000033. The next prime is 40000061. The reversal of 40000047 is 74000004.

40000047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40000033) and next prime (40000061).

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

It is not a de Polignac number, because 40000047 - 2⁶ = 39999983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39999990 and 40000035.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000547) by changing a digit.

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, 52113 + ... + 52874.

It is an arithmetic number, because the mean of its divisors is an integer number (6719232).

Almost surely, 2^40000047 is an apocalyptic number.

40000047 is a deficient number, since it is larger than the sum of its proper divisors (13753809).

40000047 is a wasteful number, since it uses less digits than its factorization.

40000047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105117.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 40000047 is about 6324.5590360119. The cubic root of 40000047 is about 341.9953232834.

The spelling of 40000047 in words is "forty million, forty-seven", and thus it is an aban number and an uban number.