86839851 has 32 divisors (see below), whose sum is σ = 137855488. Its totient is φ = 47589120.

The previous prime is 86839813. The next prime is 86839853. The reversal of 86839851 is 15893868.

It is not a de Polignac number, because 86839851 - 2⁶ = 86839787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86839851.

It is not an unprimeable number, because it can be changed into a prime (86839853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55956 + ... + 57486.

It is an arithmetic number, because the mean of its divisors is an integer number (4307984).

Almost surely, 2^86839851 is an apocalyptic number.

86839851 is a deficient number, since it is larger than the sum of its proper divisors (51015637).

86839851 is a wasteful number, since it uses less digits than its factorization.

86839851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651.

The product of its digits is 414720, while the sum is 48.

The square root of 86839851 is about 9318.7902111808. The cubic root of 86839851 is about 442.8327071052.

The spelling of 86839851 in words is "eighty-six million, eight hundred thirty-nine thousand, eight hundred fifty-one".