845049 has 4 divisors (see below), whose sum is σ = 1126736. Its totient is φ = 563364.

The previous prime is 845041. The next prime is 845069. The reversal of 845049 is 940548.

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 845049 - 2³ = 845041 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (845041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140839 + ... + 140844.

It is an arithmetic number, because the mean of its divisors is an integer number (281684).

2⁸⁴⁵⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

845049 is a deficient number, since it is larger than the sum of its proper divisors (281687).

845049 is a wasteful number, since it uses less digits than its factorization.

845049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281686.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 845049 is about 919.2654676425. The cubic root of 845049 is about 94.5425468388.

The spelling of 845049 in words is "eight hundred forty-five thousand, forty-nine".