9801239401 has 2 divisors, whose sum is σ = 9801239402. Its totient is φ = 9801239400.

The previous prime is 9801239387. The next prime is 9801239407. The reversal of 9801239401 is 1049321089.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9687283776 + 113955625 = 98424^2 + 10675^2 .

It is a cyclic number.

It is not a de Polignac number, because 9801239401 - 2²⁷ = 9667021673 is a prime.

It is not a weakly prime, because it can be changed into another prime (9801239407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900619700 + 4900619701.

It is an arithmetic number, because the mean of its divisors is an integer number (4900619701).

Almost surely, 2^9801239401 is an apocalyptic number.

It is an amenable number.

9801239401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9801239401 is an equidigital number, since it uses as much as digits as its factorization.

9801239401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 9801239401 is about 99001.2090885763. The cubic root of 9801239401 is about 2140.0651711745.

The spelling of 9801239401 in words is "nine billion, eight hundred one million, two hundred thirty-nine thousand, four hundred one".