9801954409 has 16 divisors (see below), whose sum is σ = 10752443968. Its totient is φ = 8880518592.

The previous prime is 9801954373. The next prime is 9801954431. The reversal of 9801954409 is 9044591089.

It is a happy number.

9801954409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9801954409 - 2⁹ = 9801953897 is a prime.

It is a super-2 number, since 2×9801954409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9801952409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220954 + ... + 261580.

It is an arithmetic number, because the mean of its divisors is an integer number (672027748).

Almost surely, 2^9801954409 is an apocalyptic number.

It is an amenable number.

9801954409 is a deficient number, since it is larger than the sum of its proper divisors (950489559).

9801954409 is a wasteful number, since it uses less digits than its factorization.

9801954409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40984.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 9801954409 is about 99004.8201301331. The cubic root of 9801954409 is about 2140.1172097126.

The spelling of 9801954409 in words is "nine billion, eight hundred one million, nine hundred fifty-four thousand, four hundred nine".