812349 has 12 divisors (see below), whose sum is σ = 1217216. Its totient is φ = 541404.

The previous prime is 812347. The next prime is 812351. The reversal of 812349 is 943218.

It is an interprime number because it is at equal distance from previous prime (812347) and next prime (812351).

It is not a de Polignac number, because 812349 - 2¹ = 812347 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1429 + ... + 1914.

2⁸¹²³⁴⁹ is an apocalyptic number.

It is an amenable number.

812349 is a deficient number, since it is larger than the sum of its proper divisors (404867).

812349 is an equidigital number, since it uses as much as digits as its factorization.

812349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358 (or 3346 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 812349 is about 901.3040552444. The cubic root of 812349 is about 93.3069979553.

The spelling of 812349 in words is "eight hundred twelve thousand, three hundred forty-nine".