2900891 has 4 divisors (see below), whose sum is σ = 3315312. Its totient is φ = 2486472.

The previous prime is 2900869. The next prime is 2900893. The reversal of 2900891 is 1980092.

2900891 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.

It is a cyclic number.

It is not a de Polignac number, because 2900891 - 2⁶ = 2900827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2900893) 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, 207200 + ... + 207213.

It is an arithmetic number, because the mean of its divisors is an integer number (828828).

2^2900891 is an apocalyptic number.

2900891 is a deficient number, since it is larger than the sum of its proper divisors (414421).

2900891 is an equidigital number, since it uses as much as digits as its factorization.

2900891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414420.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 2900891 is about 1703.2002231094. The cubic root of 2900891 is about 142.6189178676.

The spelling of 2900891 in words is "two million, nine hundred thousand, eight hundred ninety-one".