197933749 has 8 divisors (see below), whose sum is σ = 213500952. Its totient is φ = 182415360.

The previous prime is 197933741. The next prime is 197933753. The reversal of 197933749 is 947339791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52562500 + 145371249 = 7250^2 + 12057^2 .

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 197933749 - 2³ = 197933741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197933696 and 197933705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197933741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 20209.

It is an arithmetic number, because the mean of its divisors is an integer number (26687619).

Almost surely, 2^197933749 is an apocalyptic number.

It is an amenable number.

197933749 is a deficient number, since it is larger than the sum of its proper divisors (15567203).

197933749 is a wasteful number, since it uses less digits than its factorization.

197933749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24407.

The product of its digits is 1285956, while the sum is 52.

The square root of 197933749 is about 14068.8929557375. The cubic root of 197933749 is about 582.7826539338.

The spelling of 197933749 in words is "one hundred ninety-seven million, nine hundred thirty-three thousand, seven hundred forty-nine".