3992849 has 4 divisors (see below), whose sum is σ = 4563264. Its totient is φ = 3422436.

The previous prime is 3992843. The next prime is 3992873. The reversal of 3992849 is 9482993.

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 3992849 - 2¹² = 3988753 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 285197 + ... + 285210.

It is an arithmetic number, because the mean of its divisors is an integer number (1140816).

Almost surely, 2^3992849 is an apocalyptic number.

It is an amenable number.

3992849 is a deficient number, since it is larger than the sum of its proper divisors (570415).

3992849 is an equidigital number, since it uses as much as digits as its factorization.

3992849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570414.

The product of its digits is 139968, while the sum is 44.

The square root of 3992849 is about 1998.2114502725. The cubic root of 3992849 is about 158.6454528952.

The spelling of 3992849 in words is "three million, nine hundred ninety-two thousand, eight hundred forty-nine".