86851749 has 12 divisors (see below), whose sum is σ = 121058336. Its totient is φ = 55382712.

The previous prime is 86851747. The next prime is 86851753. The reversal of 86851749 is 94715868.

It is not a de Polignac number, because 86851749 - 2¹ = 86851747 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86851698 and 86851707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86851747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25777 + ... + 28950.

Almost surely, 2^86851749 is an apocalyptic number.

It is an amenable number.

86851749 is a deficient number, since it is larger than the sum of its proper divisors (34206587).

86851749 is a wasteful number, since it uses less digits than its factorization.

86851749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54776 (or 54753 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 86851749 is about 9319.4285769032. The cubic root of 86851749 is about 442.8529304738.

The spelling of 86851749 in words is "eighty-six million, eight hundred fifty-one thousand, seven hundred forty-nine".