789946642 has 4 divisors (see below), whose sum is σ = 1184919966. Its totient is φ = 394973320.

The previous prime is 789946627. The next prime is 789946649. The reversal of 789946642 is 246649987.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246649987 = 647 ⋅381221.

It can be written as a sum of positive squares in only one way, i.e., 572118561 + 217828081 = 23919^2 + 14759^2 .

It is not an unprimeable number, because it can be changed into a prime (789946649) 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 as a sum of consecutive naturals, namely, 197486659 + ... + 197486662.

Almost surely, 2^789946642 is an apocalyptic number.

789946642 is a deficient number, since it is larger than the sum of its proper divisors (394973324).

789946642 is a wasteful number, since it uses less digits than its factorization.

789946642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394973323.

The product of its digits is 5225472, while the sum is 55.

The square root of 789946642 is about 28105.9894328593. The cubic root of 789946642 is about 924.4127334424.

The spelling of 789946642 in words is "seven hundred eighty-nine million, nine hundred forty-six thousand, six hundred forty-two".