197994029 has 4 divisors (see below), whose sum is σ = 201349920. Its totient is φ = 194638140.

The previous prime is 197994023. The next prime is 197994047. The reversal of 197994029 is 920499791.

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, and also an emirpimes, since its reverse is a distinct semiprime: 920499791 = 2879 ⋅319729.

It is a cyclic number.

It is not a de Polignac number, because 197994029 - 2⁸ = 197993773 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 (197994023) 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, 1677857 + ... + 1677974.

It is an arithmetic number, because the mean of its divisors is an integer number (50337480).

Almost surely, 2^197994029 is an apocalyptic number.

It is an amenable number.

197994029 is a deficient number, since it is larger than the sum of its proper divisors (3355891).

197994029 is an equidigital number, since it uses as much as digits as its factorization.

197994029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355890.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 197994029 is about 14071.0351076245. The cubic root of 197994029 is about 582.8418093716.

The spelling of 197994029 in words is "one hundred ninety-seven million, nine hundred ninety-four thousand, twenty-nine".