812382947 has 2 divisors, whose sum is σ = 812382948. Its totient is φ = 812382946.

The previous prime is 812382937. The next prime is 812382971. The reversal of 812382947 is 749283218.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 812382947 - 2⁸ = 812382691 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 812382898 and 812382907.

It is not a weakly prime, because it can be changed into another prime (812382937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406191473 + 406191474.

It is an arithmetic number, because the mean of its divisors is an integer number (406191474).

Almost surely, 2^812382947 is an apocalyptic number.

812382947 is a deficient number, since it is larger than the sum of its proper divisors (1).

812382947 is an equidigital number, since it uses as much as digits as its factorization.

812382947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 44.

The square root of 812382947 is about 28502.3323080761. The cubic root of 812382947 is about 933.0829766288.

The spelling of 812382947 in words is "eight hundred twelve million, three hundred eighty-two thousand, nine hundred forty-seven".