2945849 has 4 divisors (see below), whose sum is σ = 3047460. Its totient is φ = 2844240.

The previous prime is 2945807. The next prime is 2945851. The reversal of 2945849 is 9485492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1428025 + 1517824 = 1195^2 + 1232^2 .

It is a cyclic number.

It is not a de Polignac number, because 2945849 - 2¹² = 2941753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2945869) 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, 50762 + ... + 50819.

It is an arithmetic number, because the mean of its divisors is an integer number (761865).

2^2945849 is an apocalyptic number.

2945849 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2945849 is a deficient number, since it is larger than the sum of its proper divisors (101611).

2945849 is a wasteful number, since it uses less digits than its factorization.

2945849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101610.

The product of its digits is 103680, while the sum is 41.

The square root of 2945849 is about 1716.3475755219. The cubic root of 2945849 is about 143.3519133417.

The spelling of 2945849 in words is "two million, nine hundred forty-five thousand, eight hundred forty-nine".