86851049 has 4 divisors (see below), whose sum is σ = 86935680. Its totient is φ = 86766420.

The previous prime is 86851043. The next prime is 86851067. The reversal of 86851049 is 94015868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86851049 - 2¹⁶ = 86785513 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 = 86850997 and 86851015.

It is not an unprimeable number, because it can be changed into a prime (86851043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40757 + ... + 42834.

It is an arithmetic number, because the mean of its divisors is an integer number (21733920).

Almost surely, 2^86851049 is an apocalyptic number.

It is an amenable number.

86851049 is a deficient number, since it is larger than the sum of its proper divisors (84631).

86851049 is a wasteful number, since it uses less digits than its factorization.

86851049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84630.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 86851049 is about 9319.3910208768. The cubic root of 86851049 is about 442.8517407150.

The spelling of 86851049 in words is "eighty-six million, eight hundred fifty-one thousand, forty-nine".