812895069 has 128 divisors (see below), whose sum is σ = 1470873600. Its totient is φ = 388177920.

The previous prime is 812895067. The next prime is 812895101. The reversal of 812895069 is 960598218.

It is a happy number.

It is not a de Polignac number, because 812895069 - 2¹ = 812895067 is a prime.

It is a super-2 number, since 2×812895069² = 1321596786409029522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812895067) 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 127 ways as a sum of consecutive naturals, for example, 10289772 + ... + 10289850.

It is an arithmetic number, because the mean of its divisors is an integer number (11491200).

Almost surely, 2^812895069 is an apocalyptic number.

It is an amenable number.

812895069 is a deficient number, since it is larger than the sum of its proper divisors (657978531).

812895069 is a wasteful number, since it uses less digits than its factorization.

812895069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 812895069 is about 28511.3147539709. The cubic root of 812895069 is about 933.2790056671.

The spelling of 812895069 in words is "eight hundred twelve million, eight hundred ninety-five thousand, sixty-nine".