87335909 has 4 divisors (see below), whose sum is σ = 87595404. Its totient is φ = 87076416.

The previous prime is 87335887. The next prime is 87335933. The reversal of 87335909 is 90953378.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90953378 = 2 ⋅45476689.

It can be written as a sum of positive squares in 2 ways, for example, as 11035684 + 76300225 = 3322^2 + 8735^2 .

It is a cyclic number.

It is not a de Polignac number, because 87335909 - 2²⁴ = 70558693 is a prime.

It is a super-2 number, since 2×87335909² = 15255122001712562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87335909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87335999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129242 + ... + 129915.

It is an arithmetic number, because the mean of its divisors is an integer number (21898851).

Almost surely, 2^87335909 is an apocalyptic number.

It is an amenable number.

87335909 is a deficient number, since it is larger than the sum of its proper divisors (259495).

87335909 is a wasteful number, since it uses less digits than its factorization.

87335909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259494.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 87335909 is about 9345.3683180493. The cubic root of 87335909 is about 443.6743090103.

The spelling of 87335909 in words is "eighty-seven million, three hundred thirty-five thousand, nine hundred nine".