850851749 has 8 divisors (see below), whose sum is σ = 977054880. Its totient is φ = 732790800.

The previous prime is 850851739. The next prime is 850851809. The reversal of 850851749 is 947158058.

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 850851749 - 2⁴ = 850851733 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 (850851709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2035322 + ... + 2035739.

It is an arithmetic number, because the mean of its divisors is an integer number (122131860).

Almost surely, 2^850851749 is an apocalyptic number.

It is an amenable number.

850851749 is a deficient number, since it is larger than the sum of its proper divisors (126203131).

850851749 is a wasteful number, since it uses less digits than its factorization.

850851749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071091.

The product of its (nonzero) digits is 403200, while the sum is 47.

The square root of 850851749 is about 29169.3631915405. The cubic root of 850851749 is about 947.5845373527.

The spelling of 850851749 in words is "eight hundred fifty million, eight hundred fifty-one thousand, seven hundred forty-nine".