196449091 has 2 divisors, whose sum is σ = 196449092. Its totient is φ = 196449090.

The previous prime is 196449083. The next prime is 196449101. The reversal of 196449091 is 190944691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196449091 - 2³ = 196449083 is a prime.

It is not a weakly prime, because it can be changed into another prime (196449191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98224545 + 98224546.

It is an arithmetic number, because the mean of its divisors is an integer number (98224546).

Almost surely, 2^196449091 is an apocalyptic number.

196449091 is a deficient number, since it is larger than the sum of its proper divisors (1).

196449091 is an equidigital number, since it uses as much as digits as its factorization.

196449091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 196449091 is about 14016.0297873542. The cubic root of 196449091 is about 581.3218868811.

The spelling of 196449091 in words is "one hundred ninety-six million, four hundred forty-nine thousand, ninety-one".