789906389 has 4 divisors (see below), whose sum is σ = 789962880. Its totient is φ = 789849900.

The previous prime is 789906373. The next prime is 789906401. The reversal of 789906389 is 983609987.

789906389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 789906389 - 2⁴ = 789906373 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 (789906889) 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, 9914 + ... + 40964.

It is an arithmetic number, because the mean of its divisors is an integer number (197490720).

Almost surely, 2^789906389 is an apocalyptic number.

It is an amenable number.

789906389 is a deficient number, since it is larger than the sum of its proper divisors (56491).

789906389 is a wasteful number, since it uses less digits than its factorization.

789906389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56490.

The product of its (nonzero) digits is 5878656, while the sum is 59.

The square root of 789906389 is about 28105.2733308182. The cubic root of 789906389 is about 924.3970315305.

The spelling of 789906389 in words is "seven hundred eighty-nine million, nine hundred six thousand, three hundred eighty-nine".