845812441 has 4 divisors (see below), whose sum is σ = 895566132. Its totient is φ = 796058752.

The previous prime is 845812427. The next prime is 845812453. The reversal of 845812441 is 144218548.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 734193216 + 111619225 = 27096^2 + 10565^2 .

It is a cyclic number.

It is not a de Polignac number, because 845812441 - 2⁷ = 845812313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 845812441.

It is not an unprimeable number, because it can be changed into a prime (845812841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24876820 + ... + 24876853.

It is an arithmetic number, because the mean of its divisors is an integer number (223891533).

Almost surely, 2^845812441 is an apocalyptic number.

It is an amenable number.

845812441 is a deficient number, since it is larger than the sum of its proper divisors (49753691).

845812441 is a wasteful number, since it uses less digits than its factorization.

845812441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49753690.

The product of its digits is 40960, while the sum is 37.

The square root of 845812441 is about 29082.8547601504. The cubic root of 845812441 is about 945.7100906669.

The spelling of 845812441 in words is "eight hundred forty-five million, eight hundred twelve thousand, four hundred forty-one".