949466821 has 2 divisors, whose sum is σ = 949466822. Its totient is φ = 949466820.

The previous prime is 949466783. The next prime is 949466851. The reversal of 949466821 is 128664949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 772284100 + 177182721 = 27790^2 + 13311^2 .

It is a cyclic number.

It is not a de Polignac number, because 949466821 - 2¹⁵ = 949434053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949466851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474733410 + 474733411.

It is an arithmetic number, because the mean of its divisors is an integer number (474733411).

Almost surely, 2^949466821 is an apocalyptic number.

It is an amenable number.

949466821 is a deficient number, since it is larger than the sum of its proper divisors (1).

949466821 is an equidigital number, since it uses as much as digits as its factorization.

949466821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 949466821 is about 30813.4194954082. The cubic root of 949466821 is about 982.8636291903.

The spelling of 949466821 in words is "nine hundred forty-nine million, four hundred sixty-six thousand, eight hundred twenty-one".