87909755 has 4 divisors (see below), whose sum is σ = 105491712. Its totient is φ = 70327800.

The previous prime is 87909733. The next prime is 87909793. The reversal of 87909755 is 55790978.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 87909755 - 2¹⁰ = 87908731 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8790971 + ... + 8790980.

It is an arithmetic number, because the mean of its divisors is an integer number (26372928).

Almost surely, 2^87909755 is an apocalyptic number.

87909755 is a deficient number, since it is larger than the sum of its proper divisors (17581957).

87909755 is a wasteful number, since it uses less digits than its factorization.

87909755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17581956.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 87909755 is about 9376.0202111557. The cubic root of 87909755 is about 444.6439183183.

The spelling of 87909755 in words is "eighty-seven million, nine hundred nine thousand, seven hundred fifty-five".