2898921 has 4 divisors (see below), whose sum is σ = 3865232. Its totient is φ = 1932612.

The previous prime is 2898919. The next prime is 2898923. The reversal of 2898921 is 1298982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2898919) and next prime (2898923).

It is not a de Polignac number, because 2898921 - 2¹ = 2898919 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2898921.

It is not an unprimeable number, because it can be changed into a prime (2898923) 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 3 ways as a sum of consecutive naturals, for example, 483151 + ... + 483156.

It is an arithmetic number, because the mean of its divisors is an integer number (966308).

2^2898921 is an apocalyptic number.

It is an amenable number.

2898921 is a deficient number, since it is larger than the sum of its proper divisors (966311).

2898921 is an equidigital number, since it uses as much as digits as its factorization.

2898921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966310.

The product of its digits is 20736, while the sum is 39.

The square root of 2898921 is about 1702.6218018104. The cubic root of 2898921 is about 142.5866263070.

The spelling of 2898921 in words is "two million, eight hundred ninety-eight thousand, nine hundred twenty-one".