850916649 has 12 divisors (see below), whose sum is σ = 1247073968. Its totient is φ = 515706840.

The previous prime is 850916557. The next prime is 850916659. The reversal of 850916649 is 946619058.

It is not a de Polignac number, because 850916649 - 2⁹ = 850916137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 850916598 and 850916607.

It is not an unprimeable number, because it can be changed into a prime (850916659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1171699 + ... + 1172424.

Almost surely, 2^850916649 is an apocalyptic number.

It is an amenable number.

850916649 is a deficient number, since it is larger than the sum of its proper divisors (396157319).

850916649 is a wasteful number, since it uses less digits than its factorization.

850916649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344148 (or 2344137 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 850916649 is about 29170.4756389059. The cubic root of 850916649 is about 947.6086295533.

The spelling of 850916649 in words is "eight hundred fifty million, nine hundred sixteen thousand, six hundred forty-nine".