197792479 has 4 divisors (see below), whose sum is σ = 206392176. Its totient is φ = 189192784.

The previous prime is 197792473. The next prime is 197792503. The reversal of 197792479 is 974297791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974297791 = 31 ⋅31428961.

It is a cyclic number.

It is not a de Polignac number, because 197792479 - 2⁵ = 197792447 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 (197792473) 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, 4299814 + ... + 4299859.

It is an arithmetic number, because the mean of its divisors is an integer number (51598044).

Almost surely, 2^197792479 is an apocalyptic number.

197792479 is a deficient number, since it is larger than the sum of its proper divisors (8599697).

197792479 is an equidigital number, since it uses as much as digits as its factorization.

197792479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599696.

The product of its digits is 2000376, while the sum is 55.

The square root of 197792479 is about 14063.8714086840. The cubic root of 197792479 is about 582.6439723453.

The spelling of 197792479 in words is "one hundred ninety-seven million, seven hundred ninety-two thousand, four hundred seventy-nine".