196890047 has 2 divisors, whose sum is σ = 196890048. Its totient is φ = 196890046.

The previous prime is 196890037. The next prime is 196890049. The reversal of 196890047 is 740098691.

It is a strong prime.

It is an emirp because it is prime and its reverse (740098691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196890047 - 2¹² = 196885951 is a prime.

Together with 196890049, 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 (196890049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98445023 + 98445024.

It is an arithmetic number, because the mean of its divisors is an integer number (98445024).

Almost surely, 2^196890047 is an apocalyptic number.

196890047 is a deficient number, since it is larger than the sum of its proper divisors (1).

196890047 is an equidigital number, since it uses as much as digits as its factorization.

196890047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 196890047 is about 14031.7513874783. The cubic root of 196890047 is about 581.7565131704.

The spelling of 196890047 in words is "one hundred ninety-six million, eight hundred ninety thousand, forty-seven".