147641909 has 2 divisors, whose sum is σ = 147641910. Its totient is φ = 147641908.

The previous prime is 147641869. The next prime is 147641927. The reversal of 147641909 is 909146741.

147641909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105001009 + 42640900 = 10247^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 147641909 - 2¹² = 147637813 is a prime.

It is a Sophie Germain prime.

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 (147641999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73820954 + 73820955.

It is an arithmetic number, because the mean of its divisors is an integer number (73820955).

Almost surely, 2^147641909 is an apocalyptic number.

It is an amenable number.

147641909 is a deficient number, since it is larger than the sum of its proper divisors (1).

147641909 is an equidigital number, since it uses as much as digits as its factorization.

147641909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 147641909 is about 12150.7986980280. The cubic root of 147641909 is about 528.5302927638.

The spelling of 147641909 in words is "one hundred forty-seven million, six hundred forty-one thousand, nine hundred nine".