812280429 has 12 divisors (see below), whose sum is σ = 1174326556. Its totient is φ = 541043712.

The previous prime is 812280421. The next prime is 812280433. The reversal of 812280429 is 924082218.

812280429 is a `hidden beast` number, since 8 + 1 + 228 + 0 + 429 = 666.

812280429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 263315529 + 548964900 = 16227^2 + 23430^2 .

It is not a de Polignac number, because 812280429 - 2³ = 812280421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812280393 and 812280402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812280421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28762 + ... + 49515.

Almost surely, 2^812280429 is an apocalyptic number.

It is an amenable number.

812280429 is a deficient number, since it is larger than the sum of its proper divisors (362046127).

812280429 is a wasteful number, since it uses less digits than its factorization.

812280429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79436 (or 79433 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 812280429 is about 28500.5338371056. The cubic root of 812280429 is about 933.0437250973.

The spelling of 812280429 in words is "eight hundred twelve million, two hundred eighty thousand, four hundred twenty-nine".