1001029009 has 2 divisors, whose sum is σ = 1001029010. Its totient is φ = 1001029008.

The previous prime is 1001028923. The next prime is 1001029019. The reversal of 1001029009 is 9009201001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 782432784 + 218596225 = 27972^2 + 14785^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001029009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001029019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500514504 + 500514505.

It is an arithmetic number, because the mean of its divisors is an integer number (500514505).

Almost surely, 2^1001029009 is an apocalyptic number.

It is an amenable number.

1001029009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001029009 is an equidigital number, since it uses as much as digits as its factorization.

1001029009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1001029009 is about 31639.0424791902. The cubic root of 1001029009 is about 1000.3428854162.

The spelling of 1001029009 in words is "one billion, one million, twenty-nine thousand, nine".