196139 has 2 divisors, whose sum is σ = 196140. Its totient is φ = 196138.

The previous prime is 196117. The next prime is 196159. The reversal of 196139 is 931691.

It is a strong prime.

It is an emirp because it is prime and its reverse (931691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196139 - 2⁸ = 195883 is a prime.

It is a Sophie Germain prime.

It is equal to p₁₇₆₆₉ and since 196139 and 17669 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 7.

It is not a weakly prime, because it can be changed into another prime (196159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98069 + 98070.

It is an arithmetic number, because the mean of its divisors is an integer number (98070).

2¹⁹⁶¹³⁹ is an apocalyptic number.

196139 is a deficient number, since it is larger than the sum of its proper divisors (1).

196139 is an equidigital number, since it uses as much as digits as its factorization.

196139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1458, while the sum is 29.

The square root of 196139 is about 442.8758290989. The cubic root of 196139 is about 58.1015857442.

The spelling of 196139 in words is "one hundred ninety-six thousand, one hundred thirty-nine".