894838561 has 2 divisors, whose sum is σ = 894838562. Its totient is φ = 894838560.

The previous prime is 894838513. The next prime is 894838579. The reversal of 894838561 is 165838498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 855211536 + 39627025 = 29244^2 + 6295^2 .

It is a cyclic number.

It is not a de Polignac number, because 894838561 - 2¹³ = 894830369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 894838499 and 894838508.

It is not a weakly prime, because it can be changed into another prime (894838501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447419280 + 447419281.

It is an arithmetic number, because the mean of its divisors is an integer number (447419281).

Almost surely, 2^894838561 is an apocalyptic number.

It is an amenable number.

894838561 is a deficient number, since it is larger than the sum of its proper divisors (1).

894838561 is an equidigital number, since it uses as much as digits as its factorization.

894838561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The square root of 894838561 is about 29913.8523263053. The cubic root of 894838561 is about 963.6401729924.

The spelling of 894838561 in words is "eight hundred ninety-four million, eight hundred thirty-eight thousand, five hundred sixty-one".