850384642 has 8 divisors (see below), whose sum is σ = 1350610956. Its totient is φ = 400180992.

The previous prime is 850384631. The next prime is 850384643. The reversal of 850384642 is 246483058.

It can be written as a sum of positive squares in 2 ways, for example, as 776235321 + 74149321 = 27861^2 + 8611^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 850384595 and 850384604.

It is not an unprimeable number, because it can be changed into a prime (850384643) 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, 12505623 + ... + 12505690.

Almost surely, 2^850384642 is an apocalyptic number.

850384642 is a deficient number, since it is larger than the sum of its proper divisors (500226314).

850384642 is a wasteful number, since it uses less digits than its factorization.

850384642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25011332.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 850384642 is about 29161.3552840056. The cubic root of 850384642 is about 947.4111015793.

The spelling of 850384642 in words is "eight hundred fifty million, three hundred eighty-four thousand, six hundred forty-two".