876812381 has 2 divisors, whose sum is σ = 876812382. Its totient is φ = 876812380.

The previous prime is 876812359. The next prime is 876812413. The reversal of 876812381 is 183218678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 603439225 + 273373156 = 24565^2 + 16534^2 .

It is a cyclic number.

It is not a de Polignac number, because 876812381 - 2²² = 872618077 is a prime.

It is a super-2 number, since 2×876812381² = 1537599902949778322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (876812341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438406190 + 438406191.

It is an arithmetic number, because the mean of its divisors is an integer number (438406191).

Almost surely, 2^876812381 is an apocalyptic number.

It is an amenable number.

876812381 is a deficient number, since it is larger than the sum of its proper divisors (1).

876812381 is an equidigital number, since it uses as much as digits as its factorization.

876812381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 876812381 is about 29611.0178987484. The cubic root of 876812381 is about 957.1255093261.

The spelling of 876812381 in words is "eight hundred seventy-six million, eight hundred twelve thousand, three hundred eighty-one".