487189457 has 2 divisors, whose sum is σ = 487189458. Its totient is φ = 487189456.

The previous prime is 487189403. The next prime is 487189477. The reversal of 487189457 is 754981784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 448761856 + 38427601 = 21184^2 + 6199^2 .

It is a cyclic number.

It is not a de Polignac number, because 487189457 - 2²² = 482995153 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 487189399 and 487189408.

It is not a weakly prime, because it can be changed into another prime (487189477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243594728 + 243594729.

It is an arithmetic number, because the mean of its divisors is an integer number (243594729).

Almost surely, 2^487189457 is an apocalyptic number.

It is an amenable number.

487189457 is a deficient number, since it is larger than the sum of its proper divisors (1).

487189457 is an equidigital number, since it uses as much as digits as its factorization.

487189457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 53.

The square root of 487189457 is about 22072.3686313907. The cubic root of 487189457 is about 786.8633070579.

The spelling of 487189457 in words is "four hundred eighty-seven million, one hundred eighty-nine thousand, four hundred fifty-seven".