470720909 has 2 divisors, whose sum is σ = 470720910. Its totient is φ = 470720908.

The previous prime is 470720897. The next prime is 470720923. The reversal of 470720909 is 909027074.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395413225 + 75307684 = 19885^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 470720909 - 2⁴ = 470720893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470720989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235360454 + 235360455.

It is an arithmetic number, because the mean of its divisors is an integer number (235360455).

Almost surely, 2^470720909 is an apocalyptic number.

It is an amenable number.

470720909 is a deficient number, since it is larger than the sum of its proper divisors (1).

470720909 is an equidigital number, since it uses as much as digits as its factorization.

470720909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 470720909 is about 21696.1035441851. The cubic root of 470720909 is about 777.8953281597.

The spelling of 470720909 in words is "four hundred seventy million, seven hundred twenty thousand, nine hundred nine".