1005449089 has 2 divisors, whose sum is σ = 1005449090. Its totient is φ = 1005449088.

The previous prime is 1005449077. The next prime is 1005449119. The reversal of 1005449089 is 9809445001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005207025 + 242064 = 31705^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005449089 - 2¹¹ = 1005447041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005449059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502724544 + 502724545.

It is an arithmetic number, because the mean of its divisors is an integer number (502724545).

Almost surely, 2^1005449089 is an apocalyptic number.

It is an amenable number.

1005449089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005449089 is an equidigital number, since it uses as much as digits as its factorization.

1005449089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 1005449089 is about 31708.8172122519. The cubic root of 1005449089 is about 1001.8130737768.

The spelling of 1005449089 in words is "one billion, five million, four hundred forty-nine thousand, eighty-nine".