884685421 has 2 divisors, whose sum is σ = 884685422. Its totient is φ = 884685420.

The previous prime is 884685407. The next prime is 884685443. The reversal of 884685421 is 124586488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510262921 + 374422500 = 22589^2 + 19350^2 .

It is a cyclic number.

It is not a de Polignac number, because 884685421 - 2⁹ = 884684909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (884685401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442342710 + 442342711.

It is an arithmetic number, because the mean of its divisors is an integer number (442342711).

Almost surely, 2^884685421 is an apocalyptic number.

It is an amenable number.

884685421 is a deficient number, since it is larger than the sum of its proper divisors (1).

884685421 is an equidigital number, since it uses as much as digits as its factorization.

884685421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 491520, while the sum is 46.

The square root of 884685421 is about 29743.6618626557. The cubic root of 884685421 is about 959.9817057422.

The spelling of 884685421 in words is "eight hundred eighty-four million, six hundred eighty-five thousand, four hundred twenty-one".