86838911 has 6 divisors (see below), whose sum is σ = 91650312. Its totient is φ = 82268100.

The previous prime is 86838877. The next prime is 86838923. The reversal of 86838911 is 11983868.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-86838911 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 (86838211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119915 + ... + 120636.

It is an arithmetic number, because the mean of its divisors is an integer number (15275052).

Almost surely, 2^86838911 is an apocalyptic number.

86838911 is a deficient number, since it is larger than the sum of its proper divisors (4811401).

86838911 is a wasteful number, since it uses less digits than its factorization.

86838911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240589 (or 240570 counting only the distinct ones).

The product of its digits is 82944, while the sum is 44.

The square root of 86838911 is about 9318.7397753130. The cubic root of 86838911 is about 442.8311092818.

The spelling of 86838911 in words is "eighty-six million, eight hundred thirty-eight thousand, nine hundred eleven".