86898909 has 4 divisors (see below), whose sum is σ = 115865216. Its totient is φ = 57932604.

The previous prime is 86898907. The next prime is 86898923. The reversal of 86898909 is 90989868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86898909 - 2¹ = 86898907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86898901) by changing a digit.

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, 14483149 + ... + 14483154.

It is an arithmetic number, because the mean of its divisors is an integer number (28966304).

Almost surely, 2^86898909 is an apocalyptic number.

It is an amenable number.

86898909 is a deficient number, since it is larger than the sum of its proper divisors (28966307).

86898909 is a wasteful number, since it uses less digits than its factorization.

86898909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28966306.

The product of its (nonzero) digits is 2239488, while the sum is 57.

The square root of 86898909 is about 9321.9584315743. The cubic root of 86898909 is about 442.9330715012.

The spelling of 86898909 in words is "eighty-six million, eight hundred ninety-eight thousand, nine hundred nine".