884727721 has 2 divisors, whose sum is σ = 884727722. Its totient is φ = 884727720.

The previous prime is 884727707. The next prime is 884727743. The reversal of 884727721 is 127727488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 763969600 + 120758121 = 27640^2 + 10989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-884727721 is a prime.

It is not a weakly prime, because it can be changed into another prime (884727121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442363860 + 442363861.

It is an arithmetic number, because the mean of its divisors is an integer number (442363861).

Almost surely, 2^884727721 is an apocalyptic number.

It is an amenable number.

884727721 is a deficient number, since it is larger than the sum of its proper divisors (1).

884727721 is an equidigital number, since it uses as much as digits as its factorization.

884727721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 351232, while the sum is 46.

The square root of 884727721 is about 29744.3729300182. The cubic root of 884727721 is about 959.9970055607.

The spelling of 884727721 in words is "eight hundred eighty-four million, seven hundred twenty-seven thousand, seven hundred twenty-one".