2797989 has 4 divisors (see below), whose sum is σ = 3730656. Its totient is φ = 1865324.

The previous prime is 2797961. The next prime is 2797999. The reversal of 2797989 is 9897972.

It is a happy number.

2797989 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 2797989 - 2⁸ = 2797733 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797919) 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, 466329 + ... + 466334.

It is an arithmetic number, because the mean of its divisors is an integer number (932664).

2^2797989 is an apocalyptic number.

It is an amenable number.

2797989 is a deficient number, since it is larger than the sum of its proper divisors (932667).

2797989 is an equidigital number, since it uses as much as digits as its factorization.

2797989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932666.

The product of its digits is 571536, while the sum is 51.

The square root of 2797989 is about 1672.7190439521. The cubic root of 2797989 is about 140.9122234223.

The spelling of 2797989 in words is "two million, seven hundred ninety-seven thousand, nine hundred eighty-nine".