905075489 has 2 divisors, whose sum is σ = 905075490. Its totient is φ = 905075488.

The previous prime is 905075467. The next prime is 905075491. The reversal of 905075489 is 984570509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704371600 + 200703889 = 26540^2 + 14167^2 .

It is a cyclic number.

It is not a de Polignac number, because 905075489 - 2¹⁶ = 905009953 is a prime.

Together with 905075491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (905075419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452537744 + 452537745.

It is an arithmetic number, because the mean of its divisors is an integer number (452537745).

Almost surely, 2^905075489 is an apocalyptic number.

It is an amenable number.

905075489 is a deficient number, since it is larger than the sum of its proper divisors (1).

905075489 is an equidigital number, since it uses as much as digits as its factorization.

905075489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 905075489 is about 30084.4725564534. The cubic root of 905075489 is about 967.3009208312.

The spelling of 905075489 in words is "nine hundred five million, seventy-five thousand, four hundred eighty-nine".