789977885 has 8 divisors (see below), whose sum is σ = 954336600. Its totient is φ = 627740224.

The previous prime is 789977857. The next prime is 789977887. The reversal of 789977885 is 588779987.

It can be written as a sum of positive squares in 4 ways, for example, as 47251876 + 742726009 = 6874^2 + 27253^2 .

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 789977885 - 2¹⁰ = 789976861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789977887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529442 + ... + 530931.

It is an arithmetic number, because the mean of its divisors is an integer number (119292075).

Almost surely, 2^789977885 is an apocalyptic number.

It is an amenable number.

789977885 is a deficient number, since it is larger than the sum of its proper divisors (164358715).

789977885 is a wasteful number, since it uses less digits than its factorization.

789977885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060527.

The product of its digits is 71124480, while the sum is 68.

The square root of 789977885 is about 28106.5452341621. The cubic root of 789977885 is about 924.4249203610.

The spelling of 789977885 in words is "seven hundred eighty-nine million, nine hundred seventy-seven thousand, eight hundred eighty-five".