197628379 has 8 divisors (see below), whose sum is σ = 219696512. Its totient is φ = 176541120.

The previous prime is 197628337. The next prime is 197628401. The reversal of 197628379 is 973826791.

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

It is a cyclic number.

It is not a de Polignac number, because 197628379 - 2⁹ = 197627867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197622379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244794 + ... + 245599.

It is an arithmetic number, because the mean of its divisors is an integer number (27462064).

Almost surely, 2^197628379 is an apocalyptic number.

197628379 is a deficient number, since it is larger than the sum of its proper divisors (22068133).

197628379 is a wasteful number, since it uses less digits than its factorization.

197628379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490437.

The product of its digits is 1143072, while the sum is 52.

The square root of 197628379 is about 14058.0361003947. The cubic root of 197628379 is about 582.4827961296.

The spelling of 197628379 in words is "one hundred ninety-seven million, six hundred twenty-eight thousand, three hundred seventy-nine".