300921149 has 2 divisors, whose sum is σ = 300921150. Its totient is φ = 300921148.

The previous prime is 300921143. The next prime is 300921151. The reversal of 300921149 is 941129003.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274068025 + 26853124 = 16555^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 300921149 - 2²⁸ = 32485693 is a prime.

It is a Sophie Germain prime.

Together with 300921151, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300921143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150460574 + 150460575.

It is an arithmetic number, because the mean of its divisors is an integer number (150460575).

Almost surely, 2^300921149 is an apocalyptic number.

It is an amenable number.

300921149 is a deficient number, since it is larger than the sum of its proper divisors (1).

300921149 is an equidigital number, since it uses as much as digits as its factorization.

300921149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 300921149 is about 17347.0789760121. The cubic root of 300921149 is about 670.1174138921.

The spelling of 300921149 in words is "three hundred million, nine hundred twenty-one thousand, one hundred forty-nine".