87932111 has 2 divisors, whose sum is σ = 87932112. Its totient is φ = 87932110.

The previous prime is 87932101. The next prime is 87932113. The reversal of 87932111 is 11123978.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87932111 is a prime.

It is a super-2 number, since 2×87932111² = 15464112289832642, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 87932113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87932113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43966055 + 43966056.

It is an arithmetic number, because the mean of its divisors is an integer number (43966056).

Almost surely, 2^87932111 is an apocalyptic number.

87932111 is a deficient number, since it is larger than the sum of its proper divisors (1).

87932111 is an equidigital number, since it uses as much as digits as its factorization.

87932111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 87932111 is about 9377.2123256328. The cubic root of 87932111 is about 444.6816070326.

The spelling of 87932111 in words is "eighty-seven million, nine hundred thirty-two thousand, one hundred eleven".