196739089 has 2 divisors, whose sum is σ = 196739090. Its totient is φ = 196739088.

The previous prime is 196739041. The next prime is 196739093. The reversal of 196739089 is 980937691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148644864 + 48094225 = 12192^2 + 6935^2 .

It is an emirp because it is prime and its reverse (980937691) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196739089 is a prime.

It is not a weakly prime, because it can be changed into another prime (196739009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98369544 + 98369545.

It is an arithmetic number, because the mean of its divisors is an integer number (98369545).

Almost surely, 2^196739089 is an apocalyptic number.

It is an amenable number.

196739089 is a deficient number, since it is larger than the sum of its proper divisors (1).

196739089 is an equidigital number, since it uses as much as digits as its factorization.

196739089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 196739089 is about 14026.3711985674. The cubic root of 196739089 is about 581.6077952183.

The spelling of 196739089 in words is "one hundred ninety-six million, seven hundred thirty-nine thousand, eighty-nine".