1020849 has 4 divisors (see below), whose sum is σ = 1361136. Its totient is φ = 680564.

The previous prime is 1020847. The next prime is 1020853. The reversal of 1020849 is 9480201.

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 1020849 - 2¹ = 1020847 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1020841) 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, 170139 + ... + 170144.

It is an arithmetic number, because the mean of its divisors is an integer number (340284).

2^1020849 is an apocalyptic number.

It is an amenable number.

1020849 is a deficient number, since it is larger than the sum of its proper divisors (340287).

1020849 is an equidigital number, since it uses as much as digits as its factorization.

1020849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340286.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1020849 is about 1010.3707240414. The cubic root of 1020849 is about 100.6901920565.

The spelling of 1020849 in words is "one million, twenty thousand, eight hundred forty-nine".