87149107 has 2 divisors, whose sum is σ = 87149108. Its totient is φ = 87149106.

The previous prime is 87149099. The next prime is 87149129. The reversal of 87149107 is 70194178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87149107 - 2³ = 87149099 is a prime.

It is not a weakly prime, because it can be changed into another prime (87149177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43574553 + 43574554.

It is an arithmetic number, because the mean of its divisors is an integer number (43574554).

Almost surely, 2^87149107 is an apocalyptic number.

87149107 is a deficient number, since it is larger than the sum of its proper divisors (1).

87149107 is an equidigital number, since it uses as much as digits as its factorization.

87149107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 87149107 is about 9335.3686054703. The cubic root of 87149107 is about 443.3577595351.

The spelling of 87149107 in words is "eighty-seven million, one hundred forty-nine thousand, one hundred seven".