9689394121 has 32 divisors (see below), whose sum is σ = 11208637440. Its totient is φ = 8297016000.

The previous prime is 9689394119. The next prime is 9689394139. The reversal of 9689394121 is 1214939869.

It is a cyclic number.

It is not a de Polignac number, because 9689394121 - 2¹ = 9689394119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9689394101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1475796 + ... + 1482346.

It is an arithmetic number, because the mean of its divisors is an integer number (350269920).

Almost surely, 2^9689394121 is an apocalyptic number.

It is an amenable number.

9689394121 is a deficient number, since it is larger than the sum of its proper divisors (1519243319).

9689394121 is a wasteful number, since it uses less digits than its factorization.

9689394121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its digits is 839808, while the sum is 52.

The square root of 9689394121 is about 98434.7200991601. The cubic root of 9689394121 is about 2131.8936718694.

The spelling of 9689394121 in words is "nine billion, six hundred eighty-nine million, three hundred ninety-four thousand, one hundred twenty-one".