2997993 has 4 divisors (see below), whose sum is σ = 3997328. Its totient is φ = 1998660.

The previous prime is 2997977. The next prime is 2997997. The reversal of 2997993 is 3997992.

It is a happy number.

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 not a de Polignac number, because 2997993 - 2⁴ = 2997977 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2997997) 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, 499663 + ... + 499668.

It is an arithmetic number, because the mean of its divisors is an integer number (999332).

2^2997993 is an apocalyptic number.

It is an amenable number.

2997993 is a deficient number, since it is larger than the sum of its proper divisors (999335).

2997993 is an equidigital number, since it uses as much as digits as its factorization.

2997993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999334.

The product of its digits is 275562, while the sum is 48.

The square root of 2997993 is about 1731.4713396415. The cubic root of 2997993 is about 144.1927876905.

Subtracting 2997993 from its reverse (3997992), we obtain a palindrome (999999).

The spelling of 2997993 in words is "two million, nine hundred ninety-seven thousand, nine hundred ninety-three".