990000910001 has 2 divisors, whose sum is σ = 990000910002. Its totient is φ = 990000910000.

The previous prime is 990000909979. The next prime is 990000910013. The reversal of 990000910001 is 100019000099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 941414170225 + 48586739776 = 970265^2 + 220424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990000910001 is a prime.

It is not a weakly prime, because it can be changed into another prime (990000010001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495000455000 + 495000455001.

It is an arithmetic number, because the mean of its divisors is an integer number (495000455001).

Almost surely, 2^990000910001 is an apocalyptic number.

It is an amenable number.

990000910001 is a deficient number, since it is larger than the sum of its proper divisors (1).

990000910001 is an equidigital number, since it uses as much as digits as its factorization.

990000910001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 29.

The spelling of 990000910001 in words is "nine hundred ninety billion, nine hundred ten thousand, one".