86378869 has 8 divisors (see below), whose sum is σ = 90234432. Its totient is φ = 82531680.

The previous prime is 86378857. The next prime is 86378881. The reversal of 86378869 is 96887368.

It is an interprime number because it is at equal distance from previous prime (86378857) and next prime (86378881).

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 86378869 - 2¹⁵ = 86346101 is a prime.

It is a super-2 number, since 2×86378869² = 14922618019438322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86378839) 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, 28962 + ... + 31804.

It is an arithmetic number, because the mean of its divisors is an integer number (11279304).

Almost surely, 2^86378869 is an apocalyptic number.

It is an amenable number.

86378869 is a deficient number, since it is larger than the sum of its proper divisors (3855563).

86378869 is a wasteful number, since it uses less digits than its factorization.

86378869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187.

The product of its digits is 3483648, while the sum is 55.

The square root of 86378869 is about 9294.0232945695. The cubic root of 86378869 is about 442.0477364957.

The spelling of 86378869 in words is "eighty-six million, three hundred seventy-eight thousand, eight hundred sixty-nine".