876973991 has 2 divisors, whose sum is σ = 876973992. Its totient is φ = 876973990.

The previous prime is 876973957. The next prime is 876974009. The reversal of 876973991 is 199379678.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 876973991 - 2¹⁴ = 876957607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 876973991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (876973931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 438486995 + 438486996.

It is an arithmetic number, because the mean of its divisors is an integer number (438486996).

Almost surely, 2^876973991 is an apocalyptic number.

876973991 is a deficient number, since it is larger than the sum of its proper divisors (1).

876973991 is an equidigital number, since it uses as much as digits as its factorization.

876973991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 59.

The square root of 876973991 is about 29613.7466559029. The cubic root of 876973991 is about 957.1843100283.

The spelling of 876973991 in words is "eight hundred seventy-six million, nine hundred seventy-three thousand, nine hundred ninety-one".