8787491 has 2 divisors, whose sum is σ = 8787492. Its totient is φ = 8787490.

The previous prime is 8787431. The next prime is 8787497. The reversal of 8787491 is 1947878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8787491 - 2¹⁴ = 8771107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8787497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393745 + 4393746.

It is an arithmetic number, because the mean of its divisors is an integer number (4393746).

Almost surely, 2^8787491 is an apocalyptic number.

8787491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8787491 is an equidigital number, since it uses as much as digits as its factorization.

8787491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The square root of 8787491 is about 2964.3702535277. The cubic root of 8787491 is about 206.3581525215.

It can be divided in two parts, 87 and 87491, that added together give a palindrome (87578).

The spelling of 8787491 in words is "eight million, seven hundred eighty-seven thousand, four hundred ninety-one".