3992449 has 4 divisors (see below), whose sum is σ = 4001536. Its totient is φ = 3983364.

The previous prime is 3992447. The next prime is 3992453. The reversal of 3992449 is 9442993.

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 3992449 - 2¹ = 3992447 is a prime.

It is a Duffinian number.

3992449 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3992441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3849 + ... + 4774.

It is an arithmetic number, because the mean of its divisors is an integer number (1000384).

Almost surely, 2^3992449 is an apocalyptic number.

It is an amenable number.

3992449 is a deficient number, since it is larger than the sum of its proper divisors (9087).

3992449 is an equidigital number, since it uses as much as digits as its factorization.

3992449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086.

The product of its digits is 69984, while the sum is 40.

The square root of 3992449 is about 1998.1113582581. Note that the first 3 decimals coincide. The cubic root of 3992449 is about 158.6401550656.

The spelling of 3992449 in words is "three million, nine hundred ninety-two thousand, four hundred forty-nine".