949900121 has 2 divisors, whose sum is σ = 949900122. Its totient is φ = 949900120.

The previous prime is 949900103. The next prime is 949900123. The reversal of 949900121 is 121009949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941262400 + 8637721 = 30680^2 + 2939^2 .

It is an emirp because it is prime and its reverse (121009949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 949900121 - 2¹⁸ = 949637977 is a prime.

Together with 949900123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (949900123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474950060 + 474950061.

It is an arithmetic number, because the mean of its divisors is an integer number (474950061).

Almost surely, 2^949900121 is an apocalyptic number.

It is an amenable number.

949900121 is a deficient number, since it is larger than the sum of its proper divisors (1).

949900121 is an equidigital number, since it uses as much as digits as its factorization.

949900121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 949900121 is about 30820.4497209239. The cubic root of 949900121 is about 983.0131201233.

The spelling of 949900121 in words is "nine hundred forty-nine million, nine hundred thousand, one hundred twenty-one".