427252489 has 2 divisors, whose sum is σ = 427252490. Its totient is φ = 427252488.

The previous prime is 427252459. The next prime is 427252493. The reversal of 427252489 is 984252724.

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., 424030464 + 3222025 = 20592^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 427252489 - 2⁷ = 427252361 is a prime.

It is not a weakly prime, because it can be changed into another prime (427252459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213626244 + 213626245.

It is an arithmetic number, because the mean of its divisors is an integer number (213626245).

Almost surely, 2^427252489 is an apocalyptic number.

It is an amenable number.

427252489 is a deficient number, since it is larger than the sum of its proper divisors (1).

427252489 is an equidigital number, since it uses as much as digits as its factorization.

427252489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 427252489 is about 20670.0868164602. The cubic root of 427252489 is about 753.1732154849.

The spelling of 427252489 in words is "four hundred twenty-seven million, two hundred fifty-two thousand, four hundred eighty-nine".