766394029389 has 4 divisors (see below), whose sum is σ = 1021858705856. Its totient is φ = 510929352924.

The previous prime is 766394029369. The next prime is 766394029441. The reversal of 766394029389 is 983920493667.

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.

It is not a de Polignac number, because 766394029389 - 2³³ = 757804094797 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 (766394029339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127732338229 + ... + 127732338234.

It is an arithmetic number, because the mean of its divisors is an integer number (255464676464).

Almost surely, 2^766394029389 is an apocalyptic number.

It is an amenable number.

766394029389 is a deficient number, since it is larger than the sum of its proper divisors (255464676467).

766394029389 is a wasteful number, since it uses less digits than its factorization.

766394029389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255464676466.

The product of its (nonzero) digits is 105815808, while the sum is 66.

The spelling of 766394029389 in words is "seven hundred sixty-six billion, three hundred ninety-four million, twenty-nine thousand, three hundred eighty-nine".