894081959489 has 2 divisors, whose sum is σ = 894081959490. Its totient is φ = 894081959488.

The previous prime is 894081959473. The next prime is 894081959521. The reversal of 894081959489 is 984959180498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 887914213264 + 6167746225 = 942292^2 + 78535^2 .

It is a cyclic number.

It is not a de Polignac number, because 894081959489 - 2⁴ = 894081959473 is a prime.

It is a super-2 number, since 2×894081959489² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (894281959489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447040979744 + 447040979745.

It is an arithmetic number, because the mean of its divisors is an integer number (447040979745).

Almost surely, 2^894081959489 is an apocalyptic number.

It is an amenable number.

894081959489 is a deficient number, since it is larger than the sum of its proper divisors (1).

894081959489 is an equidigital number, since it uses as much as digits as its factorization.

894081959489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268738560, while the sum is 74.

The spelling of 894081959489 in words is "eight hundred ninety-four billion, eighty-one million, nine hundred fifty-nine thousand, four hundred eighty-nine".