894643445 has 16 divisors (see below), whose sum is σ = 1158176880. Its totient is φ = 660900864.

The previous prime is 894643439. The next prime is 894643447. The reversal of 894643445 is 544346498.

It can be written as a sum of positive squares in 8 ways, for example, as 87572164 + 807071281 = 9358^2 + 28409^2 .

It is a cyclic number.

It is not a de Polignac number, because 894643445 - 2¹⁰ = 894642421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 894643445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (894643447) 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 15 ways as a sum of consecutive naturals, for example, 94790 + ... + 103799.

It is an arithmetic number, because the mean of its divisors is an integer number (72386055).

Almost surely, 2^894643445 is an apocalyptic number.

894643445 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

894643445 is a deficient number, since it is larger than the sum of its proper divisors (263533435).

894643445 is a wasteful number, since it uses less digits than its factorization.

894643445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198664.

The product of its digits is 1658880, while the sum is 47.

The square root of 894643445 is about 29910.5908500651. The cubic root of 894643445 is about 963.5701285950.

The spelling of 894643445 in words is "eight hundred ninety-four million, six hundred forty-three thousand, four hundred forty-five".