789999001 has 8 divisors (see below), whose sum is σ = 862542144. Its totient is φ = 717576720.

The previous prime is 789998971. The next prime is 789999059. The reversal of 789999001 is 100999987.

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

It is a cyclic number.

It is not a de Polignac number, because 789999001 - 2¹⁷ = 789867929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 789999001.

It is not an unprimeable number, because it can be changed into a prime (789999601) 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 7 ways as a sum of consecutive naturals, for example, 16261 + ... + 42946.

It is an arithmetic number, because the mean of its divisors is an integer number (107817768).

Almost surely, 2^789999001 is an apocalyptic number.

It is an amenable number.

789999001 is a deficient number, since it is larger than the sum of its proper divisors (72543143).

789999001 is a wasteful number, since it uses less digits than its factorization.

789999001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60431.

The product of its (nonzero) digits is 367416, while the sum is 52.

The square root of 789999001 is about 28106.9208736923. The cubic root of 789999001 is about 924.4331568712.

The spelling of 789999001 in words is "seven hundred eighty-nine million, nine hundred ninety-nine thousand, one".