2991849 has 8 divisors (see below), whose sum is σ = 4559040. Its totient is φ = 1709616.

The previous prime is 2991803. The next prime is 2991853. The reversal of 2991849 is 9481992.

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

It is not a de Polignac number, because 2991849 - 2¹² = 2987753 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2991849.

It is not an unprimeable number, because it can be changed into a prime (2991889) 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 7 ways as a sum of consecutive naturals, for example, 71214 + ... + 71255.

It is an arithmetic number, because the mean of its divisors is an integer number (569880).

2^2991849 is an apocalyptic number.

It is an amenable number.

2991849 is a deficient number, since it is larger than the sum of its proper divisors (1567191).

2991849 is a wasteful number, since it uses less digits than its factorization.

2991849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142479.

The product of its digits is 46656, while the sum is 42.

The square root of 2991849 is about 1729.6962161027. The cubic root of 2991849 is about 144.0942188178.

The spelling of 2991849 in words is "two million, nine hundred ninety-one thousand, eight hundred forty-nine".