949634821 has 2 divisors, whose sum is σ = 949634822. Its totient is φ = 949634820.

The previous prime is 949634797. The next prime is 949634827. The reversal of 949634821 is 128436949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 733868100 + 215766721 = 27090^2 + 14689^2 .

It is an emirp because it is prime and its reverse (128436949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 949634821 - 2²³ = 941246213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949634827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474817410 + 474817411.

It is an arithmetic number, because the mean of its divisors is an integer number (474817411).

Almost surely, 2^949634821 is an apocalyptic number.

It is an amenable number.

949634821 is a deficient number, since it is larger than the sum of its proper divisors (1).

949634821 is an equidigital number, since it uses as much as digits as its factorization.

949634821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 949634821 is about 30816.1454598073. The cubic root of 949634821 is about 982.9215955310.

The spelling of 949634821 in words is "nine hundred forty-nine million, six hundred thirty-four thousand, eight hundred twenty-one".