9940827899 has 2 divisors, whose sum is σ = 9940827900. Its totient is φ = 9940827898.

The previous prime is 9940827889. The next prime is 9940827961. The reversal of 9940827899 is 9987280499.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9940827899 is a prime.

It is not a weakly prime, because it can be changed into another prime (9940827859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970413949 + 4970413950.

It is an arithmetic number, because the mean of its divisors is an integer number (4970413950).

Almost surely, 2^9940827899 is an apocalyptic number.

9940827899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9940827899 is an equidigital number, since it uses as much as digits as its factorization.

9940827899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23514624, while the sum is 65.

The square root of 9940827899 is about 99703.7005281148. The cubic root of 9940827899 is about 2150.1768665749.

The spelling of 9940827899 in words is "nine billion, nine hundred forty million, eight hundred twenty-seven thousand, eight hundred ninety-nine".