39947112 has 24 divisors (see below), whose sum is σ = 108190290. Its totient is φ = 13315680.

The previous prime is 39947057. The next prime is 39947119. The reversal of 39947112 is 21174993.

It can be written as a sum of positive squares in only one way, i.e., 39765636 + 181476 = 6306^2 + 426^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (39947119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277339 + ... + 277482.

Almost surely, 2^39947112 is an apocalyptic number.

It is an amenable number.

39947112 is an abundant number, since it is smaller than the sum of its proper divisors (68243178).

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

39947112 is a wasteful number, since it uses less digits than its factorization.

39947112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554833 (or 554826 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 39947112 is about 6320.3727738164. The cubic root of 39947112 is about 341.8443941756.

The spelling of 39947112 in words is "thirty-nine million, nine hundred forty-seven thousand, one hundred twelve".