475507489 has 2 divisors, whose sum is σ = 475507490. Its totient is φ = 475507488.

The previous prime is 475507447. The next prime is 475507499. The reversal of 475507489 is 984705574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474891264 + 616225 = 21792^2 + 785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475507489 is a prime.

It is a super-2 number, since 2×475507489² = 452214744190170242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (475507499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237753744 + 237753745.

It is an arithmetic number, because the mean of its divisors is an integer number (237753745).

Almost surely, 2^475507489 is an apocalyptic number.

It is an amenable number.

475507489 is a deficient number, since it is larger than the sum of its proper divisors (1).

475507489 is an equidigital number, since it uses as much as digits as its factorization.

475507489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 475507489 is about 21806.1342057688. The cubic root of 475507489 is about 780.5231472926.

The spelling of 475507489 in words is "four hundred seventy-five million, five hundred seven thousand, four hundred eighty-nine".