475621709 has 2 divisors, whose sum is σ = 475621710. Its totient is φ = 475621708.

The previous prime is 475621693. The next prime is 475621723. The reversal of 475621709 is 907126574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438776809 + 36844900 = 20947^2 + 6070^2 .

It is a cyclic number.

It is not a de Polignac number, because 475621709 - 2⁴ = 475621693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475621739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237810854 + 237810855.

It is an arithmetic number, because the mean of its divisors is an integer number (237810855).

Almost surely, 2^475621709 is an apocalyptic number.

It is an amenable number.

475621709 is a deficient number, since it is larger than the sum of its proper divisors (1).

475621709 is an equidigital number, since it uses as much as digits as its factorization.

475621709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 475621709 is about 21808.7530363384. The cubic root of 475621709 is about 780.5856378727.

The spelling of 475621709 in words is "four hundred seventy-five million, six hundred twenty-one thousand, seven hundred nine".