810049 has 2 divisors, whose sum is σ = 810050. Its totient is φ = 810048.

The previous prime is 810023. The next prime is 810053. The reversal of 810049 is 940018.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 49 = 900^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-810049 is a prime.

It is not a weakly prime, because it can be changed into another prime (810059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405024 + 405025.

It is an arithmetic number, because the mean of its divisors is an integer number (405025).

2⁸¹⁰⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

810049 is a deficient number, since it is larger than the sum of its proper divisors (1).

810049 is an equidigital number, since it uses as much as digits as its factorization.

810049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 810049 is about 900.0272218105. The cubic root of 810049 is about 93.2188548246.

It can be divided in two parts, 8100 and 49, that multiplied together give a square (396900 = 630²).

The spelling of 810049 in words is "eight hundred ten thousand, forty-nine".