845012769 has 4 divisors (see below), whose sum is σ = 1126683696. Its totient is φ = 563341844.

The previous prime is 845012731. The next prime is 845012797. The reversal of 845012769 is 967210548.

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 845012769 - 2⁸ = 845012513 is a prime.

It is a super-2 number, since 2×845012769² = 1428093159546094722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 845012769.

It is not an unprimeable number, because it can be changed into a prime (845012269) 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 3 ways as a sum of consecutive naturals, for example, 140835459 + ... + 140835464.

It is an arithmetic number, because the mean of its divisors is an integer number (281670924).

Almost surely, 2^845012769 is an apocalyptic number.

It is an amenable number.

845012769 is a deficient number, since it is larger than the sum of its proper divisors (281670927).

845012769 is a wasteful number, since it uses less digits than its factorization.

845012769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281670926.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 845012769 is about 29069.1033401445. The cubic root of 845012769 is about 945.4119566668.

The spelling of 845012769 in words is "eight hundred forty-five million, twelve thousand, seven hundred sixty-nine".