2196909847 has 16 divisors (see below), whose sum is σ = 2599509024. Its totient is φ = 1833856000.

The previous prime is 2196909839. The next prime is 2196909853. The reversal of 2196909847 is 7489096912.

2196909847 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 2196909847 - 2³ = 2196909839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196909047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135604 + ... + 150937.

It is an arithmetic number, because the mean of its divisors is an integer number (162469314).

Almost surely, 2^2196909847 is an apocalyptic number.

2196909847 is a deficient number, since it is larger than the sum of its proper divisors (402599177).

2196909847 is a wasteful number, since it uses less digits than its factorization.

2196909847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286610.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The square root of 2196909847 is about 46871.2048810354. The cubic root of 2196909847 is about 1299.9822181000.

The spelling of 2196909847 in words is "two billion, one hundred ninety-six million, nine hundred nine thousand, eight hundred forty-seven".