40871994 has 16 divisors (see below), whose sum is σ = 81852768. Its totient is φ = 13605872.

The previous prime is 40871969. The next prime is 40872011. The reversal of 40871994 is 49917804.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (5115798).

Almost surely, 2^40871994 is an apocalyptic number.

40871994 is an abundant number, since it is smaller than the sum of its proper divisors (40980774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40871994 is a wasteful number, since it uses less digits than its factorization.

40871994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9069.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 40871994 is about 6393.1208341467. The cubic root of 40871994 is about 344.4624942405.

The spelling of 40871994 in words is "forty million, eight hundred seventy-one thousand, nine hundred ninety-four".