812850949 has 2 divisors, whose sum is σ = 812850950. Its totient is φ = 812850948.

The previous prime is 812850943. The next prime is 812850977. The reversal of 812850949 is 949058218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 809402500 + 3448449 = 28450^2 + 1857^2 .

It is a cyclic number.

It is not a de Polignac number, because 812850949 - 2¹¹ = 812848901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 812850899 and 812850908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812850943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406425474 + 406425475.

It is an arithmetic number, because the mean of its divisors is an integer number (406425475).

Almost surely, 2^812850949 is an apocalyptic number.

It is an amenable number.

812850949 is a deficient number, since it is larger than the sum of its proper divisors (1).

812850949 is an equidigital number, since it uses as much as digits as its factorization.

812850949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 812850949 is about 28510.5410155612. The cubic root of 812850949 is about 933.2621207430.

The spelling of 812850949 in words is "eight hundred twelve million, eight hundred fifty thousand, nine hundred forty-nine".