197839806 has 8 divisors (see below), whose sum is σ = 395679624. Its totient is φ = 65946600.

The previous prime is 197839787. The next prime is 197839819. The reversal of 197839806 is 608938791.

197839806 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

197839806 is an admirable number.

It is a super-4 number, since 4×197839806⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16486645 + ... + 16486656.

It is an arithmetic number, because the mean of its divisors is an integer number (49459953).

Almost surely, 2^197839806 is an apocalyptic number.

197839806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197839806 is a wasteful number, since it uses less digits than its factorization.

197839806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32973306.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 197839806 is about 14065.5538817353. The cubic root of 197839806 is about 582.6904395524.

The spelling of 197839806 in words is "one hundred ninety-seven million, eight hundred thirty-nine thousand, eight hundred six".