197794379 has 2 divisors, whose sum is σ = 197794380. Its totient is φ = 197794378.

The previous prime is 197794361. The next prime is 197794423. The reversal of 197794379 is 973497791.

197794379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197794379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197794279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98897189 + 98897190.

It is an arithmetic number, because the mean of its divisors is an integer number (98897190).

Almost surely, 2^197794379 is an apocalyptic number.

197794379 is a deficient number, since it is larger than the sum of its proper divisors (1).

197794379 is an equidigital number, since it uses as much as digits as its factorization.

197794379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000564, while the sum is 56.

The square root of 197794379 is about 14063.9389574898. The cubic root of 197794379 is about 582.6458379707.

The spelling of 197794379 in words is "one hundred ninety-seven million, seven hundred ninety-four thousand, three hundred seventy-nine".