474621209 has 2 divisors, whose sum is σ = 474621210. Its totient is φ = 474621208.

The previous prime is 474621157. The next prime is 474621263. The reversal of 474621209 is 902126474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262278025 + 212343184 = 16195^2 + 14572^2 .

It is a cyclic number.

It is not a de Polignac number, because 474621209 - 2¹² = 474617113 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (474621269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237310604 + 237310605.

It is an arithmetic number, because the mean of its divisors is an integer number (237310605).

Almost surely, 2^474621209 is an apocalyptic number.

It is an amenable number.

474621209 is a deficient number, since it is larger than the sum of its proper divisors (1).

474621209 is an equidigital number, since it uses as much as digits as its factorization.

474621209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 474621209 is about 21785.8029230047. The cubic root of 474621209 is about 780.0379167411.

The spelling of 474621209 in words is "four hundred seventy-four million, six hundred twenty-one thousand, two hundred nine".