197979753 has 8 divisors (see below), whose sum is σ = 277866400. Its totient is φ = 125039808.

The previous prime is 197979731. The next prime is 197979763. The reversal of 197979753 is 357979791.

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

It is not a de Polignac number, because 197979753 - 2⁵ = 197979721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 3473329 = 197979753 / (1 + 9 + 7 + 9 + 7 + 9 + 7 + 5 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197979693 and 197979702.

It is not an unprimeable number, because it can be changed into a prime (197979703) 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, 1736608 + ... + 1736721.

It is an arithmetic number, because the mean of its divisors is an integer number (34733300).

Almost surely, 2^197979753 is an apocalyptic number.

It is an amenable number.

197979753 is a deficient number, since it is larger than the sum of its proper divisors (79886647).

197979753 is a wasteful number, since it uses less digits than its factorization.

197979753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473351.

The product of its digits is 3750705, while the sum is 57.

The square root of 197979753 is about 14070.5278152598. The cubic root of 197979753 is about 582.8278007847.

The spelling of 197979753 in words is "one hundred ninety-seven million, nine hundred seventy-nine thousand, seven hundred fifty-three".