87833891 has 2 divisors, whose sum is σ = 87833892. Its totient is φ = 87833890.

The previous prime is 87833873. The next prime is 87833897. The reversal of 87833891 is 19833878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87833891 - 2¹⁰ = 87832867 is a prime.

It is not a weakly prime, because it can be changed into another prime (87833897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43916945 + 43916946.

It is an arithmetic number, because the mean of its divisors is an integer number (43916946).

Almost surely, 2^87833891 is an apocalyptic number.

87833891 is a deficient number, since it is larger than the sum of its proper divisors (1).

87833891 is an equidigital number, since it uses as much as digits as its factorization.

87833891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 87833891 is about 9371.9736982132. The cubic root of 87833891 is about 444.5159758455.

The spelling of 87833891 in words is "eighty-seven million, eight hundred thirty-three thousand, eight hundred ninety-one".