884071921 has 2 divisors, whose sum is σ = 884071922. Its totient is φ = 884071920.

The previous prime is 884071897. The next prime is 884071933. The reversal of 884071921 is 129170488.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 877640625 + 6431296 = 29625^2 + 2536^2 .

It is a cyclic number.

It is not a de Polignac number, because 884071921 - 2¹⁵ = 884039153 is a prime.

It is not a weakly prime, because it can be changed into another prime (884071021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442035960 + 442035961.

It is an arithmetic number, because the mean of its divisors is an integer number (442035961).

Almost surely, 2^884071921 is an apocalyptic number.

It is an amenable number.

884071921 is a deficient number, since it is larger than the sum of its proper divisors (1).

884071921 is an equidigital number, since it uses as much as digits as its factorization.

884071921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 884071921 is about 29733.3469525380. The cubic root of 884071921 is about 959.7597492691.

The spelling of 884071921 in words is "eight hundred eighty-four million, seventy-one thousand, nine hundred twenty-one".