40438047 has 8 divisors (see below), whose sum is σ = 58064944. Its totient is φ = 24884928.

The previous prime is 40438033. The next prime is 40438063. The reversal of 40438047 is 74083404.

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

It is not a de Polignac number, because 40438047 - 2⁴ = 40438031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40438247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518398 + ... + 518475.

It is an arithmetic number, because the mean of its divisors is an integer number (7258118).

Almost surely, 2^40438047 is an apocalyptic number.

40438047 is a deficient number, since it is larger than the sum of its proper divisors (17626897).

40438047 is a wasteful number, since it uses less digits than its factorization.

40438047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036889.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40438047 is about 6359.0916804210. The cubic root of 40438047 is about 343.2390760409.

It can be divided in two parts, 4043 and 8047, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 40438047 in words is "forty million, four hundred thirty-eight thousand, forty-seven".