2997891 has 36 divisors (see below), whose sum is σ = 4929288. Its totient is φ = 1819584.

The previous prime is 2997887. The next prime is 2997893. The reversal of 2997891 is 1987992.

It is not a de Polignac number, because 2997891 - 2² = 2997887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2997893) 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 35 ways as a sum of consecutive naturals, for example, 41031 + ... + 41103.

2^2997891 is an apocalyptic number.

2997891 is a deficient number, since it is larger than the sum of its proper divisors (1931397).

2997891 is an equidigital number, since it uses as much as digits as its factorization.

2997891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 89 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 2997891 is about 1731.4418846730. The cubic root of 2997891 is about 144.1911523930.

The spelling of 2997891 in words is "two million, nine hundred ninety-seven thousand, eight hundred ninety-one".