86919807 has 8 divisors (see below), whose sum is σ = 124807984. Its totient is φ = 53489088.

The previous prime is 86919799. The next prime is 86919839. The reversal of 86919807 is 70891968.

It is a happy number.

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

It is not a de Polignac number, because 86919807 - 2³ = 86919799 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 (86919307) 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, 1114318 + ... + 1114395.

It is an arithmetic number, because the mean of its divisors is an integer number (15600998).

Almost surely, 2^86919807 is an apocalyptic number.

86919807 is a deficient number, since it is larger than the sum of its proper divisors (37888177).

86919807 is a wasteful number, since it uses less digits than its factorization.

86919807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228729.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 86919807 is about 9323.0792659936. The cubic root of 86919807 is about 442.9685751055.

The spelling of 86919807 in words is "eighty-six million, nine hundred nineteen thousand, eight hundred seven".