2862921 has 4 divisors (see below), whose sum is σ = 3817232. Its totient is φ = 1908612.

The previous prime is 2862917. The next prime is 2862929. The reversal of 2862921 is 1292682.

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 not a de Polignac number, because 2862921 - 2² = 2862917 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

2862921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2862929) 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, 477151 + ... + 477156.

It is an arithmetic number, because the mean of its divisors is an integer number (954308).

2^2862921 is an apocalyptic number.

It is an amenable number.

2862921 is a deficient number, since it is larger than the sum of its proper divisors (954311).

2862921 is an equidigital number, since it uses as much as digits as its factorization.

2862921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954310.

The product of its digits is 3456, while the sum is 30.

The square root of 2862921 is about 1692.0168438878. The cubic root of 2862921 is about 141.9939328228.

The spelling of 2862921 in words is "two million, eight hundred sixty-two thousand, nine hundred twenty-one".