9883399961 has 2 divisors, whose sum is σ = 9883399962. Its totient is φ = 9883399960.

The previous prime is 9883399919. The next prime is 9883399987. The reversal of 9883399961 is 1699933889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9021390361 + 862009600 = 94981^2 + 29360^2 .

It is an emirp because it is prime and its reverse (1699933889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9883399961 - 2²⁶ = 9816291097 is a prime.

It is not a weakly prime, because it can be changed into another prime (9883399901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4941699980 + 4941699981.

It is an arithmetic number, because the mean of its divisors is an integer number (4941699981).

Almost surely, 2^9883399961 is an apocalyptic number.

It is an amenable number.

9883399961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9883399961 is an equidigital number, since it uses as much as digits as its factorization.

9883399961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 65.

The square root of 9883399961 is about 99415.2903782914. The cubic root of 9883399961 is about 2146.0283599665.

The spelling of 9883399961 in words is "nine billion, eight hundred eighty-three million, three hundred ninety-nine thousand, nine hundred sixty-one".