87099899 has 2 divisors, whose sum is σ = 87099900. Its totient is φ = 87099898.

The previous prime is 87099893. The next prime is 87099913. The reversal of 87099899 is 99899078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87099899 - 2¹² = 87095803 is a prime.

It is not a weakly prime, because it can be changed into another prime (87099893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43549949 + 43549950.

It is an arithmetic number, because the mean of its divisors is an integer number (43549950).

Almost surely, 2^87099899 is an apocalyptic number.

87099899 is a deficient number, since it is larger than the sum of its proper divisors (1).

87099899 is an equidigital number, since it uses as much as digits as its factorization.

87099899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 87099899 is about 9332.7326651951. The cubic root of 87099899 is about 443.2742977652.

It can be divided in two parts, 8 and 7099899, that added together give a palindrome (7099907).

The spelling of 87099899 in words is "eighty-seven million, ninety-nine thousand, eight hundred ninety-nine".