812877047 has 8 divisors (see below), whose sum is σ = 841229040. Its totient is φ = 784546560.

The previous prime is 812877011. The next prime is 812877061. The reversal of 812877047 is 740778218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 812877047 - 2¹⁴ = 812860663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 812876989 and 812877007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812877007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127772 + ... + 133982.

It is an arithmetic number, because the mean of its divisors is an integer number (105153630).

Almost surely, 2^812877047 is an apocalyptic number.

812877047 is a deficient number, since it is larger than the sum of its proper divisors (28351993).

812877047 is a wasteful number, since it uses less digits than its factorization.

812877047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10753.

The product of its (nonzero) digits is 175616, while the sum is 44.

The square root of 812877047 is about 28510.9987022552. The cubic root of 812877047 is about 933.2721086398.

The spelling of 812877047 in words is "eight hundred twelve million, eight hundred seventy-seven thousand, forty-seven".