487472309 has 2 divisors, whose sum is σ = 487472310. Its totient is φ = 487472308.

The previous prime is 487472273. The next prime is 487472317. The reversal of 487472309 is 903274784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487438084 + 34225 = 22078^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 487472309 - 2⁸ = 487472053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487472309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487472009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243736154 + 243736155.

It is an arithmetic number, because the mean of its divisors is an integer number (243736155).

Almost surely, 2^487472309 is an apocalyptic number.

It is an amenable number.

487472309 is a deficient number, since it is larger than the sum of its proper divisors (1).

487472309 is an equidigital number, since it uses as much as digits as its factorization.

487472309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 487472309 is about 22078.7750792475. The cubic root of 487472309 is about 787.0155563854.

The spelling of 487472309 in words is "four hundred eighty-seven million, four hundred seventy-two thousand, three hundred nine".