894089641 has 2 divisors, whose sum is σ = 894089642. Its totient is φ = 894089640.

The previous prime is 894089629. The next prime is 894089699. The reversal of 894089641 is 146980498.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 867008025 + 27081616 = 29445^2 + 5204^2 .

It is a cyclic number.

It is not a de Polignac number, because 894089641 - 2⁷ = 894089513 is a prime.

It is a super-2 number, since 2×894089641² = 1598792572287017762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (894084641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 447044820 + 447044821.

It is an arithmetic number, because the mean of its divisors is an integer number (447044821).

Almost surely, 2^894089641 is an apocalyptic number.

It is an amenable number.

894089641 is a deficient number, since it is larger than the sum of its proper divisors (1).

894089641 is an equidigital number, since it uses as much as digits as its factorization.

894089641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 894089641 is about 29901.3317596391. The cubic root of 894089641 is about 963.3712638436.

The spelling of 894089641 in words is "eight hundred ninety-four million, eighty-nine thousand, six hundred forty-one".