197805029 has 4 divisors (see below), whose sum is σ = 208215840. Its totient is φ = 187394220.

The previous prime is 197805007. The next prime is 197805061. The reversal of 197805029 is 920508791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197805029 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 (197801029) 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, 5205377 + ... + 5205414.

It is an arithmetic number, because the mean of its divisors is an integer number (52053960).

Almost surely, 2^197805029 is an apocalyptic number.

197805029 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

197805029 is a deficient number, since it is larger than the sum of its proper divisors (10410811).

197805029 is a wasteful number, since it uses less digits than its factorization.

197805029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410810.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 197805029 is about 14064.3175803165. The cubic root of 197805029 is about 582.6562950707.

The spelling of 197805029 in words is "one hundred ninety-seven million, eight hundred five thousand, twenty-nine".