769456945 has 4 divisors (see below), whose sum is σ = 923348340. Its totient is φ = 615565552.

The previous prime is 769456939. The next prime is 769456999. The reversal of 769456945 is 549654967.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549654967 = 83 ⋅6622349.

It can be written as a sum of positive squares in 2 ways, for example, as 257249521 + 512207424 = 16039^2 + 22632^2 .

It is a cyclic number.

It is not a de Polignac number, because 769456945 - 2²¹ = 767359793 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 76945690 + ... + 76945699.

It is an arithmetic number, because the mean of its divisors is an integer number (230837085).

Almost surely, 2^769456945 is an apocalyptic number.

It is an amenable number.

769456945 is a deficient number, since it is larger than the sum of its proper divisors (153891395).

769456945 is a wasteful number, since it uses less digits than its factorization.

769456945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153891394.

The product of its digits is 8164800, while the sum is 55.

The square root of 769456945 is about 27739.0869532506. The cubic root of 769456945 is about 916.3501204907.

The spelling of 769456945 in words is "seven hundred sixty-nine million, four hundred fifty-six thousand, nine hundred forty-five".