2905849 has 4 divisors (see below), whose sum is σ = 2914960. Its totient is φ = 2896740.

The previous prime is 2905823. The next prime is 2905853. The reversal of 2905849 is 9485092.

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 a cyclic number.

It is not a de Polignac number, because 2905849 - 2¹⁵ = 2873081 is a prime.

It is a Duffinian number.

2905849 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2905549) 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, 4059 + ... + 4720.

It is an arithmetic number, because the mean of its divisors is an integer number (728740).

2^2905849 is an apocalyptic number.

It is an amenable number.

2905849 is a deficient number, since it is larger than the sum of its proper divisors (9111).

2905849 is an equidigital number, since it uses as much as digits as its factorization.

2905849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 2905849 is about 1704.6550970798. The cubic root of 2905849 is about 142.7001230481.

The spelling of 2905849 in words is "two million, nine hundred five thousand, eight hundred forty-nine".