3999047 has 6 divisors (see below), whose sum is σ = 4330512. Its totient is φ = 3691272.

The previous prime is 3999001. The next prime is 3999053. The reversal of 3999047 is 7409993.

3999047 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 3999047 - 2⁶ = 3998983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3998995 and 3999013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999067) 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, 11663 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (721752).

Almost surely, 2^3999047 is an apocalyptic number.

3999047 is a deficient number, since it is larger than the sum of its proper divisors (331465).

3999047 is a wasteful number, since it uses less digits than its factorization.

3999047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23689 (or 23676 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 3999047 is about 1999.7617358075. The cubic root of 3999047 is about 158.7274975855.

The spelling of 3999047 in words is "three million, nine hundred ninety-nine thousand, forty-seven".