470720989 has 2 divisors, whose sum is σ = 470720990. Its totient is φ = 470720988.

The previous prime is 470720977. The next prime is 470721001. The reversal of 470720989 is 989027074.

It is a balanced prime because it is at equal distance from previous prime (470720977) and next prime (470721001).

It can be written as a sum of positive squares in only one way, i.e., 277788889 + 192932100 = 16667^2 + 13890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-470720989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (470720909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235360494 + 235360495.

It is an arithmetic number, because the mean of its divisors is an integer number (235360495).

Almost surely, 2^470720989 is an apocalyptic number.

It is an amenable number.

470720989 is a deficient number, since it is larger than the sum of its proper divisors (1).

470720989 is an equidigital number, since it uses as much as digits as its factorization.

470720989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 470720989 is about 21696.1053878340. The cubic root of 470720989 is about 777.8953722280.

The spelling of 470720989 in words is "four hundred seventy million, seven hundred twenty thousand, nine hundred eighty-nine".