812089245 has 32 divisors (see below), whose sum is σ = 1438640640. Its totient is φ = 387858240.

The previous prime is 812089219. The next prime is 812089247. The reversal of 812089245 is 542980218.

It is not a de Polignac number, because 812089245 - 2¹⁵ = 812056477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812089247) 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 31 ways as a sum of consecutive naturals, for example, 25675 + ... + 47784.

It is an arithmetic number, because the mean of its divisors is an integer number (44957520).

Almost surely, 2^812089245 is an apocalyptic number.

It is an amenable number.

812089245 is a deficient number, since it is larger than the sum of its proper divisors (626551395).

812089245 is a wasteful number, since it uses less digits than its factorization.

812089245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73545.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 812089245 is about 28497.1795972865. The cubic root of 812089245 is about 932.9705167888.

The spelling of 812089245 in words is "eight hundred twelve million, eighty-nine thousand, two hundred forty-five".