86908819 has 8 divisors (see below), whose sum is σ = 89491520. Its totient is φ = 84338496.

The previous prime is 86908813. The next prime is 86908823. The reversal of 86908819 is 91880968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86908819 - 2⁷ = 86908691 is a prime.

It is a super-2 number, since 2×86908819² = 15106285639949522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86908813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12262 + ... + 18004.

It is an arithmetic number, because the mean of its divisors is an integer number (11186440).

Almost surely, 2^86908819 is an apocalyptic number.

86908819 is a deficient number, since it is larger than the sum of its proper divisors (2582701).

86908819 is a wasteful number, since it uses less digits than its factorization.

86908819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6189.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 86908819 is about 9322.4899570876. The cubic root of 86908819 is about 442.9499083060.

The spelling of 86908819 in words is "eighty-six million, nine hundred eight thousand, eight hundred nineteen".