3992993 has 4 divisors (see below), whose sum is σ = 4013460. Its totient is φ = 3972528.

The previous prime is 3992987. The next prime is 3993019.

3992993 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3598609 + 394384 = 1897^2 + 628^2 .

It is a cyclic number.

It is not a de Polignac number, because 3992993 - 2¹⁸ = 3730849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3992903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9938 + ... + 10331.

It is an arithmetic number, because the mean of its divisors is an integer number (1003365).

Almost surely, 2^3992993 is an apocalyptic number.

It is an amenable number.

3992993 is a deficient number, since it is larger than the sum of its proper divisors (20467).

3992993 is a wasteful number, since it uses less digits than its factorization.

3992993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20466.

The product of its digits is 118098, while the sum is 44.

The square root of 3992993 is about 1998.2474821703. The cubic root of 3992993 is about 158.6473600272.

The spelling of 3992993 in words is "three million, nine hundred ninety-two thousand, nine hundred ninety-three".