3992641 has 4 divisors (see below), whose sum is σ = 4202800. Its totient is φ = 3782484.

The previous prime is 3992627. The next prime is 3992683. The reversal of 3992641 is 1462993.

3992641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3992641 - 2⁵ = 3992609 is a prime.

3992641 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3992597 and 3992606.

It is not an unprimeable number, because it can be changed into a prime (3992141) 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 3 ways as a sum of consecutive naturals, for example, 105051 + ... + 105088.

It is an arithmetic number, because the mean of its divisors is an integer number (1050700).

Almost surely, 2^3992641 is an apocalyptic number.

It is an amenable number.

3992641 is a deficient number, since it is larger than the sum of its proper divisors (210159).

3992641 is a wasteful number, since it uses less digits than its factorization.

3992641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210158.

The product of its digits is 11664, while the sum is 34.

The square root of 3992641 is about 1998.1594030507. The cubic root of 3992641 is about 158.6426980679.

The spelling of 3992641 in words is "three million, nine hundred ninety-two thousand, six hundred forty-one".