813049 has 2 divisors, whose sum is σ = 813050. Its totient is φ = 813048.

The previous prime is 813041. The next prime is 813061. The reversal of 813049 is 940318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 710649 + 102400 = 843^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 813049 - 2³ = 813041 is a prime.

It is a super-2 number, since 2×813049² = 1322097352802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (813041) 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 as a sum of consecutive naturals, namely, 406524 + 406525.

It is an arithmetic number, because the mean of its divisors is an integer number (406525).

2⁸¹³⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

813049 is a deficient number, since it is larger than the sum of its proper divisors (1).

813049 is an equidigital number, since it uses as much as digits as its factorization.

813049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 813049 is about 901.6922978489. The cubic root of 813049 is about 93.3337910975. Note that the first 3 decimals are identical.

The spelling of 813049 in words is "eight hundred thirteen thousand, forty-nine".