789899959 has 4 divisors (see below), whose sum is σ = 790393104. Its totient is φ = 789406816.

The previous prime is 789899947. The next prime is 789899993. The reversal of 789899959 is 959998987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959998987 = 5903 ⋅162629.

It is a cyclic number.

It is not a de Polignac number, because 789899959 - 2⁹ = 789899447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 789899891 and 789899900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789899459) 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, 244162 + ... + 247375.

It is an arithmetic number, because the mean of its divisors is an integer number (197598276).

Almost surely, 2^789899959 is an apocalyptic number.

789899959 is a deficient number, since it is larger than the sum of its proper divisors (493145).

789899959 is a wasteful number, since it uses less digits than its factorization.

789899959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493144.

The product of its digits is 132269760, while the sum is 73.

The square root of 789899959 is about 28105.1589392410. The cubic root of 789899959 is about 924.3945232632.

The spelling of 789899959 in words is "seven hundred eighty-nine million, eight hundred ninety-nine thousand, nine hundred fifty-nine".