789945653 has 16 divisors (see below), whose sum is σ = 951313920. Its totient is φ = 640782576.

The previous prime is 789945619. The next prime is 789945677. The reversal of 789945653 is 356549987.

It is a happy number.

It is not a de Polignac number, because 789945653 - 2¹² = 789941557 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 (789945683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152126 + ... + 157232.

It is an arithmetic number, because the mean of its divisors is an integer number (59457120).

Almost surely, 2^789945653 is an apocalyptic number.

It is an amenable number.

789945653 is a deficient number, since it is larger than the sum of its proper divisors (161368267).

789945653 is a wasteful number, since it uses less digits than its factorization.

789945653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296.

The product of its digits is 8164800, while the sum is 56.

The square root of 789945653 is about 28105.9718387392. The cubic root of 789945653 is about 924.4123476591.

The spelling of 789945653 in words is "seven hundred eighty-nine million, nine hundred forty-five thousand, six hundred fifty-three".