197239949 has 8 divisors (see below), whose sum is σ = 203973888. Its totient is φ = 190529280.

The previous prime is 197239937. The next prime is 197239951. The reversal of 197239949 is 949932791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197239949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197239949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197239909) 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, 12374 + ... + 23400.

It is an arithmetic number, because the mean of its divisors is an integer number (25496736).

Almost surely, 2^197239949 is an apocalyptic number.

It is an amenable number.

197239949 is a deficient number, since it is larger than the sum of its proper divisors (6733939).

197239949 is a wasteful number, since it uses less digits than its factorization.

197239949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11635.

The product of its digits is 1102248, while the sum is 53.

The square root of 197239949 is about 14044.2140755544. The cubic root of 197239949 is about 582.1009309569.

The spelling of 197239949 in words is "one hundred ninety-seven million, two hundred thirty-nine thousand, nine hundred forty-nine".