39988047 has 16 divisors (see below), whose sum is σ = 60042240. Its totient is φ = 23452800.

The previous prime is 39988043. The next prime is 39988073. The reversal of 39988047 is 74088993.

39988047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39988047 - 2² = 39988043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39987987 and 39988005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39988043) 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 15 ways as a sum of consecutive naturals, for example, 18522 + ... + 20567.

It is an arithmetic number, because the mean of its divisors is an integer number (3752640).

Almost surely, 2^39988047 is an apocalyptic number.

39988047 is a deficient number, since it is larger than the sum of its proper divisors (20054193).

39988047 is a wasteful number, since it uses less digits than its factorization.

39988047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39134.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 39988047 is about 6323.6102821094. The cubic root of 39988047 is about 341.9611203707.

The spelling of 39988047 in words is "thirty-nine million, nine hundred eighty-eight thousand, forty-seven".