87935409 has 16 divisors (see below), whose sum is σ = 130609600. Its totient is φ = 58472928.

The previous prime is 87935399. The next prime is 87935443. The reversal of 87935409 is 90453978.

It is not a de Polignac number, because 87935409 - 2¹¹ = 87933361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87935459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7062 + ... + 15024.

It is an arithmetic number, because the mean of its divisors is an integer number (8163100).

Almost surely, 2^87935409 is an apocalyptic number.

It is an amenable number.

87935409 is a deficient number, since it is larger than the sum of its proper divisors (42674191).

87935409 is a wasteful number, since it uses less digits than its factorization.

87935409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8381 (or 8375 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 87935409 is about 9377.3881758195. The cubic root of 87935409 is about 444.6871664033.

Subtracting 87935409 from its reverse (90453978), we obtain a square (2518569 = 1587²).

The spelling of 87935409 in words is "eighty-seven million, nine hundred thirty-five thousand, four hundred nine".