87853109 has 2 divisors, whose sum is σ = 87853110. Its totient is φ = 87853108.

The previous prime is 87853097. The next prime is 87853111. The reversal of 87853109 is 90135878.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69388900 + 18464209 = 8330^2 + 4297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87853109 is a prime.

Together with 87853111, 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 (87850109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43926554 + 43926555.

It is an arithmetic number, because the mean of its divisors is an integer number (43926555).

Almost surely, 2^87853109 is an apocalyptic number.

It is an amenable number.

87853109 is a deficient number, since it is larger than the sum of its proper divisors (1).

87853109 is an equidigital number, since it uses as much as digits as its factorization.

87853109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 87853109 is about 9372.9989331057. The cubic root of 87853109 is about 444.5483934198.

The spelling of 87853109 in words is "eighty-seven million, eight hundred fifty-three thousand, one hundred nine".