1001009992909 has 2 divisors, whose sum is σ = 1001009992910. Its totient is φ = 1001009992908.

The previous prime is 1001009992897. The next prime is 1001009992919. The reversal of 1001009992909 is 9092999001001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 792594917284 + 208415075625 = 890278^2 + 456525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001009992909 - 2²⁷ = 1000875775181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001009992919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500504996454 + 500504996455.

It is an arithmetic number, because the mean of its divisors is an integer number (500504996455).

Almost surely, 2^{1001009992909} is an apocalyptic number.

It is an amenable number.

1001009992909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001009992909 is an equidigital number, since it uses as much as digits as its factorization.

1001009992909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 49.

The spelling of 1001009992909 in words is "one trillion, one billion, nine million, nine hundred ninety-two thousand, nine hundred nine".