196399 has 4 divisors (see below), whose sum is σ = 224464. Its totient is φ = 168336.

The previous prime is 196387. The next prime is 196429. The reversal of 196399 is 993691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993691 = 397 ⋅2503.

It is not a de Polignac number, because 196399 - 2⁷ = 196271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14022 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (56116).

2¹⁹⁶³⁹⁹ is an apocalyptic number.

196399 is a deficient number, since it is larger than the sum of its proper divisors (28065).

196399 is an equidigital number, since it uses as much as digits as its factorization.

196399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28064.

The product of its digits is 13122, while the sum is 37.

The square root of 196399 is about 443.1692678876. The cubic root of 196399 is about 58.1272473791.

It can be divided in two parts, 196 and 399, that added together give a palindrome (595).

The spelling of 196399 in words is "one hundred ninety-six thousand, three hundred ninety-nine".