197479459 has 4 divisors (see below), whose sum is σ = 197938080. Its totient is φ = 197020840.

The previous prime is 197479439. The next prime is 197479481. The reversal of 197479459 is 954974791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 197479459 - 2¹¹ = 197477411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197479439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228664 + ... + 229525.

It is an arithmetic number, because the mean of its divisors is an integer number (49484520).

Almost surely, 2^197479459 is an apocalyptic number.

197479459 is a deficient number, since it is larger than the sum of its proper divisors (458621).

197479459 is an equidigital number, since it uses as much as digits as its factorization.

197479459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458620.

The product of its digits is 2857680, while the sum is 55.

The square root of 197479459 is about 14052.7384875689. The cubic root of 197479459 is about 582.3364522094.

The spelling of 197479459 in words is "one hundred ninety-seven million, four hundred seventy-nine thousand, four hundred fifty-nine".