769427389 has 4 divisors (see below), whose sum is σ = 769619200. Its totient is φ = 769235580.

The previous prime is 769427369. The next prime is 769427489. The reversal of 769427389 is 983724967.

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 a cyclic number.

It is not a de Polignac number, because 769427389 - 2⁵ = 769427357 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 (769427369) 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, 89757 + ... + 97954.

It is an arithmetic number, because the mean of its divisors is an integer number (192404800).

Almost surely, 2^769427389 is an apocalyptic number.

It is an amenable number.

769427389 is a deficient number, since it is larger than the sum of its proper divisors (191811).

769427389 is a wasteful number, since it uses less digits than its factorization.

769427389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191810.

The product of its digits is 4572288, while the sum is 55.

The square root of 769427389 is about 27738.5541980832. The cubic root of 769427389 is about 916.3383875444.

The spelling of 769427389 in words is "seven hundred sixty-nine million, four hundred twenty-seven thousand, three hundred eighty-nine".