1005055489 has 2 divisors, whose sum is σ = 1005055490. Its totient is φ = 1005055488.

The previous prime is 1005055423. The next prime is 1005055529. The reversal of 1005055489 is 9845505001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 817502464 + 187553025 = 28592^2 + 13695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005055489 - 2¹³ = 1005047297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005055189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502527744 + 502527745.

It is an arithmetic number, because the mean of its divisors is an integer number (502527745).

Almost surely, 2^1005055489 is an apocalyptic number.

It is an amenable number.

1005055489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005055489 is an equidigital number, since it uses as much as digits as its factorization.

1005055489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 1005055489 is about 31702.6101291361. The cubic root of 1005055489 is about 1001.6823311747.

The spelling of 1005055489 in words is "one billion, five million, fifty-five thousand, four hundred eighty-nine".