9890689744 has 40 divisors (see below), whose sum is σ = 20648365920. Its totient is φ = 4562487168.

The previous prime is 9890689733. The next prime is 9890689789. The reversal of 9890689744 is 4479860989.

9890689744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9890689744² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 409887 + ... + 433345.

It is an arithmetic number, because the mean of its divisors is an integer number (516209148).

Almost surely, 2^9890689744 is an apocalyptic number.

It is an amenable number.

9890689744 is an abundant number, since it is smaller than the sum of its proper divisors (10757676176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9890689744 is a wasteful number, since it uses less digits than its factorization.

9890689744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25507 (or 25501 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The square root of 9890689744 is about 99451.9469090475. The cubic root of 9890689744 is about 2146.5558517354. Note that the first 3 decimals are identical.

The spelling of 9890689744 in words is "nine billion, eight hundred ninety million, six hundred eighty-nine thousand, seven hundred forty-four".