953085821 has 2 divisors, whose sum is σ = 953085822. Its totient is φ = 953085820.

The previous prime is 953085817. The next prime is 953085827. The reversal of 953085821 is 128580359.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666156100 + 286929721 = 25810^2 + 16939^2 .

It is a cyclic number.

It is not a de Polignac number, because 953085821 - 2² = 953085817 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (953085827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 476542910 + 476542911.

It is an arithmetic number, because the mean of its divisors is an integer number (476542911).

Almost surely, 2^953085821 is an apocalyptic number.

It is an amenable number.

953085821 is a deficient number, since it is larger than the sum of its proper divisors (1).

953085821 is an equidigital number, since it uses as much as digits as its factorization.

953085821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 953085821 is about 30872.0880570136. The cubic root of 953085821 is about 984.1108111735.

The spelling of 953085821 in words is "nine hundred fifty-three million, eighty-five thousand, eight hundred twenty-one".