3992847 has 8 divisors (see below), whose sum is σ = 5343744. Its totient is φ = 2651928.

The previous prime is 3992843. The next prime is 3992873. The reversal of 3992847 is 7482993.

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

It is not a de Polignac number, because 3992847 - 2² = 3992843 is a prime.

3992847 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3992799 and 3992808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3992843) 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, 1503 + ... + 3200.

It is an arithmetic number, because the mean of its divisors is an integer number (667968).

Almost surely, 2^3992847 is an apocalyptic number.

3992847 is a deficient number, since it is larger than the sum of its proper divisors (1350897).

3992847 is a wasteful number, since it uses less digits than its factorization.

3992847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989.

The product of its digits is 108864, while the sum is 42.

The square root of 3992847 is about 1998.2109498249. The cubic root of 3992847 is about 158.6454264069.

The spelling of 3992847 in words is "three million, nine hundred ninety-two thousand, eight hundred forty-seven".