2797991 has 8 divisors (see below), whose sum is σ = 3215520. Its totient is φ = 2384928.

The previous prime is 2797961. The next prime is 2797999. The reversal of 2797991 is 1997972.

2797991 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2797991 - 2¹⁰ = 2796967 is a prime.

2797991 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365 + ... + 2393.

It is an arithmetic number, because the mean of its divisors is an integer number (401940).

2^2797991 is an apocalyptic number.

2797991 is a deficient number, since it is larger than the sum of its proper divisors (417529).

2797991 is a wasteful number, since it uses less digits than its factorization.

2797991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233.

The product of its digits is 71442, while the sum is 44.

The square root of 2797991 is about 1672.7196417810. The cubic root of 2797991 is about 140.9122569969.

The spelling of 2797991 in words is "two million, seven hundred ninety-seven thousand, nine hundred ninety-one".