850782961 has 4 divisors (see below), whose sum is σ = 972323392. Its totient is φ = 729242532.

The previous prime is 850782937. The next prime is 850782967. The reversal of 850782961 is 169287058.

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, and also an emirpimes, since its reverse is a distinct semiprime: 169287058 = 2 ⋅84643529.

It is a cyclic number.

It is not a de Polignac number, because 850782961 - 2⁵ = 850782929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850782967) 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, 60770205 + ... + 60770218.

It is an arithmetic number, because the mean of its divisors is an integer number (243080848).

Almost surely, 2^850782961 is an apocalyptic number.

It is an amenable number.

850782961 is a deficient number, since it is larger than the sum of its proper divisors (121540431).

850782961 is a wasteful number, since it uses less digits than its factorization.

850782961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121540430.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 850782961 is about 29168.1840538625. The cubic root of 850782961 is about 947.5590005100.

The spelling of 850782961 in words is "eight hundred fifty million, seven hundred eighty-two thousand, nine hundred sixty-one".