2149196447 has 2 divisors, whose sum is σ = 2149196448. Its totient is φ = 2149196446.

The previous prime is 2149196369. The next prime is 2149196449. The reversal of 2149196447 is 7446919412.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2149196447 - 2²⁰ = 2148147871 is a prime.

Together with 2149196449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149196449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074598223 + 1074598224.

It is an arithmetic number, because the mean of its divisors is an integer number (1074598224).

Almost surely, 2^2149196447 is an apocalyptic number.

2149196447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149196447 is an equidigital number, since it uses as much as digits as its factorization.

2149196447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 2149196447 is about 46359.4267328663. The cubic root of 2149196447 is about 1290.5020674551.

The spelling of 2149196447 in words is "two billion, one hundred forty-nine million, one hundred ninety-six thousand, four hundred forty-seven".