196400579 has 2 divisors, whose sum is σ = 196400580. Its totient is φ = 196400578.

The previous prime is 196400569. The next prime is 196400591. The reversal of 196400579 is 975004691.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196400579 is a prime.

It is not a weakly prime, because it can be changed into another prime (196400509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98200289 + 98200290.

It is an arithmetic number, because the mean of its divisors is an integer number (98200290).

Almost surely, 2^196400579 is an apocalyptic number.

196400579 is a deficient number, since it is larger than the sum of its proper divisors (1).

196400579 is an equidigital number, since it uses as much as digits as its factorization.

196400579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 196400579 is about 14014.2990905717. The cubic root of 196400579 is about 581.2740315497.

The spelling of 196400579 in words is "one hundred ninety-six million, four hundred thousand, five hundred seventy-nine".