949438421 has 2 divisors, whose sum is σ = 949438422. Its totient is φ = 949438420.

The previous prime is 949438403. The next prime is 949438429. The reversal of 949438421 is 124834949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868186225 + 81252196 = 29465^2 + 9014^2 .

It is an emirp because it is prime and its reverse (124834949) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-949438421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (949438429) 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, 474719210 + 474719211.

It is an arithmetic number, because the mean of its divisors is an integer number (474719211).

Almost surely, 2^949438421 is an apocalyptic number.

It is an amenable number.

949438421 is a deficient number, since it is larger than the sum of its proper divisors (1).

949438421 is an equidigital number, since it uses as much as digits as its factorization.

949438421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 949438421 is about 30812.9586537872. The cubic root of 949438421 is about 982.8538294428.

The spelling of 949438421 in words is "nine hundred forty-nine million, four hundred thirty-eight thousand, four hundred twenty-one".