9694943990 has 64 divisors (see below), whose sum is σ = 18648576000. Its totient is φ = 3618276480.

The previous prime is 9694943989. The next prime is 9694944001. The reversal of 9694943990 is 993494969.

9694943990 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10641635 + ... + 10642545.

It is an arithmetic number, because the mean of its divisors is an integer number (291384000).

Almost surely, 2^9694943990 is an apocalyptic number.

9694943990 is a deficient number, since it is larger than the sum of its proper divisors (8953632010).

9694943990 is a wasteful number, since it uses less digits than its factorization.

9694943990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725.

The product of its (nonzero) digits is 17006112, while the sum is 62.

The square root of 9694943990 is about 98462.9066704818. The cubic root of 9694943990 is about 2132.3006279077.

The spelling of 9694943990 in words is "nine billion, six hundred ninety-four million, nine hundred forty-three thousand, nine hundred ninety".