9994409801 has 2 divisors, whose sum is σ = 9994409802. Its totient is φ = 9994409800.

The previous prime is 9994409791. The next prime is 9994409921. The reversal of 9994409801 is 1089044999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9816053776 + 178356025 = 99076^2 + 13355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9994409801 is a prime.

It is not a weakly prime, because it can be changed into another prime (9994409101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4997204900 + 4997204901.

It is an arithmetic number, because the mean of its divisors is an integer number (4997204901).

Almost surely, 2^9994409801 is an apocalyptic number.

It is an amenable number.

9994409801 is a deficient number, since it is larger than the sum of its proper divisors (1).

9994409801 is an equidigital number, since it uses as much as digits as its factorization.

9994409801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 9994409801 is about 99972.0450976172. The cubic root of 9994409801 is about 2154.0331579128.

The spelling of 9994409801 in words is "nine billion, nine hundred ninety-four million, four hundred nine thousand, eight hundred one".