873002821 has 2 divisors, whose sum is σ = 873002822. Its totient is φ = 873002820.

The previous prime is 873002773. The next prime is 873002843. The reversal of 873002821 is 128200378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 667653921 + 205348900 = 25839^2 + 14330^2 .

It is a cyclic number.

It is not a de Polignac number, because 873002821 - 2¹¹ = 873000773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873002521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436501410 + 436501411.

It is an arithmetic number, because the mean of its divisors is an integer number (436501411).

Almost surely, 2^873002821 is an apocalyptic number.

It is an amenable number.

873002821 is a deficient number, since it is larger than the sum of its proper divisors (1).

873002821 is an equidigital number, since it uses as much as digits as its factorization.

873002821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 873002821 is about 29546.6211435419. The cubic root of 873002821 is about 955.7373292141.

The spelling of 873002821 in words is "eight hundred seventy-three million, two thousand, eight hundred twenty-one".