851149 has 8 divisors (see below), whose sum is σ = 923832. Its totient is φ = 779520.

The previous prime is 851131. The next prime is 851153. The reversal of 851149 is 941158.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13924 + 837225 = 118^2 + 915^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 851149 - 2⁵ = 851117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2889 + ... + 3169.

It is an arithmetic number, because the mean of its divisors is an integer number (115479).

2⁸⁵¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

851149 is a deficient number, since it is larger than the sum of its proper divisors (72683).

851149 is a wasteful number, since it uses less digits than its factorization.

851149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its digits is 1440, while the sum is 28.

The square root of 851149 is about 922.5773680294. The cubic root of 851149 is about 94.7694872930.

Subtracting 851149 from its reverse (941158), we obtain a palindrome (90009).

It can be divided in two parts, 851 and 149, that added together give a cube (1000 = 10³).

The spelling of 851149 in words is "eight hundred fifty-one thousand, one hundred forty-nine".