2991844 has 12 divisors (see below), whose sum is σ = 5249664. Its totient is φ = 1491944.

The previous prime is 2991803. The next prime is 2991853. The reversal of 2991844 is 4481992.

It is a happy number.

It is a super-2 number, since 2×2991844² = 17902261040672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269 + ... + 2755.

It is an arithmetic number, because the mean of its divisors is an integer number (437472).

2^2991844 is an apocalyptic number.

It is an amenable number.

2991844 is a deficient number, since it is larger than the sum of its proper divisors (2257820).

2991844 is a wasteful number, since it uses less digits than its factorization.

2991844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1992 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 2991844 is about 1729.6947707616. The cubic root of 2991844 is about 144.0941385473.

The spelling of 2991844 in words is "two million, nine hundred ninety-one thousand, eight hundred forty-four".