9982661401 has 2 divisors, whose sum is σ = 9982661402. Its totient is φ = 9982661400.

The previous prime is 9982661399. The next prime is 9982661461. The reversal of 9982661401 is 1041662899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9890501401 + 92160000 = 99451^2 + 9600^2 .

It is a cyclic number.

It is not a de Polignac number, because 9982661401 - 2¹ = 9982661399 is a prime.

Together with 9982661399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9982661461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991330700 + 4991330701.

It is an arithmetic number, because the mean of its divisors is an integer number (4991330701).

Almost surely, 2^9982661401 is an apocalyptic number.

It is an amenable number.

9982661401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9982661401 is an equidigital number, since it uses as much as digits as its factorization.

9982661401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 9982661401 is about 99913.2693940099. The cubic root of 9982661401 is about 2153.1888070533.

The spelling of 9982661401 in words is "nine billion, nine hundred eighty-two million, six hundred sixty-one thousand, four hundred one".