10020009949 has 2 divisors, whose sum is σ = 10020009950. Its totient is φ = 10020009948.

The previous prime is 10020009893. The next prime is 10020010019. The reversal of 10020009949 is 94990002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9698704324 + 321305625 = 98482^2 + 17925^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020009949 - 2⁹ = 10020009437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020009449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010004974 + 5010004975.

It is an arithmetic number, because the mean of its divisors is an integer number (5010004975).

Almost surely, 2^10020009949 is an apocalyptic number.

It is an amenable number.

10020009949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020009949 is an equidigital number, since it uses as much as digits as its factorization.

10020009949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 10020009949 in words is "ten billion, twenty million, nine thousand, nine hundred forty-nine".