9801239 has 16 divisors (see below), whose sum is σ = 11821056. Its totient is φ = 7957080.

The previous prime is 9801227. The next prime is 9801251. The reversal of 9801239 is 9321089.

9801239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9801227) and next prime (9801251).

It is not a de Polignac number, because 9801239 - 2⁴ = 9801223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208514 + ... + 208560.

It is an arithmetic number, because the mean of its divisors is an integer number (738816).

Almost surely, 2^9801239 is an apocalyptic number.

9801239 is a deficient number, since it is larger than the sum of its proper divisors (2019817).

9801239 is an frugal number, since it uses more digits than its factorization.

9801239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9801239 is about 3130.6930542613. The cubic root of 9801239 is about 214.0065141989.

The spelling of 9801239 in words is "nine million, eight hundred one thousand, two hundred thirty-nine".