196940897 has 2 divisors, whose sum is σ = 196940898. Its totient is φ = 196940896.

The previous prime is 196940839. The next prime is 196940921. The reversal of 196940897 is 798049691.

It is a happy number.

196940897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155351296 + 41589601 = 12464^2 + 6449^2 .

It is a cyclic number.

It is not a de Polignac number, because 196940897 - 2¹⁸ = 196678753 is a prime.

It is a super-3 number, since 3×196940897³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (196940797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98470448 + 98470449.

It is an arithmetic number, because the mean of its divisors is an integer number (98470449).

Almost surely, 2^196940897 is an apocalyptic number.

It is an amenable number.

196940897 is a deficient number, since it is larger than the sum of its proper divisors (1).

196940897 is an equidigital number, since it uses as much as digits as its factorization.

196940897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 196940897 is about 14033.5632324795. The cubic root of 196940897 is about 581.8065914972.

The spelling of 196940897 in words is "one hundred ninety-six million, nine hundred forty thousand, eight hundred ninety-seven".