197223949 has 8 divisors (see below), whose sum is σ = 218135960. Its totient is φ = 177132096.

The previous prime is 197223941. The next prime is 197223959. The reversal of 197223949 is 949322791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 65318724 + 131905225 = 8082^2 + 11485^2 .

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 197223949 - 2³ = 197223941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197223899 and 197223908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197223941) 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 7 ways as a sum of consecutive naturals, for example, 204534 + ... + 205495.

It is an arithmetic number, because the mean of its divisors is an integer number (27266995).

Almost surely, 2^197223949 is an apocalyptic number.

It is an amenable number.

197223949 is a deficient number, since it is larger than the sum of its proper divisors (20912011).

197223949 is a wasteful number, since it uses less digits than its factorization.

197223949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410079.

The product of its digits is 244944, while the sum is 46.

The square root of 197223949 is about 14043.6444344052. The cubic root of 197223949 is about 582.0851906251.

It can be divided in two parts, 1972 and 23949, that added together give a square (25921 = 161²).

The spelling of 197223949 in words is "one hundred ninety-seven million, two hundred twenty-three thousand, nine hundred forty-nine".