7169989906 has 8 divisors (see below), whose sum is σ = 10756395324. Its totient is φ = 3584524800.

The previous prime is 7169989901. The next prime is 7169989909. The reversal of 7169989906 is 6099899617.

It can be written as a sum of positive squares in 2 ways, for example, as 3839661225 + 3330328681 = 61965^2 + 57709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (7169989901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215695 + ... + 246706.

Almost surely, 2^7169989906 is an apocalyptic number.

7169989906 is a deficient number, since it is larger than the sum of its proper divisors (3586405418).

7169989906 is a wasteful number, since it uses less digits than its factorization.

7169989906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470156.

The product of its (nonzero) digits is 13226976, while the sum is 64.

The square root of 7169989906 is about 84675.7929162757. The cubic root of 7169989906 is about 1928.2922158350.

The spelling of 7169989906 in words is "seven billion, one hundred sixty-nine million, nine hundred eighty-nine thousand, nine hundred six".