197490959 has 8 divisors (see below), whose sum is σ = 212720640. Its totient is φ = 182744856.

The previous prime is 197490929. The next prime is 197490991. The reversal of 197490959 is 959094791.

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-197490959 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 197490959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197490929) 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, 120047 + ... + 121680.

It is an arithmetic number, because the mean of its divisors is an integer number (26590080).

Almost surely, 2^197490959 is an apocalyptic number.

197490959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

197490959 is a deficient number, since it is larger than the sum of its proper divisors (15229681).

197490959 is a wasteful number, since it uses less digits than its factorization.

197490959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241789.

The product of its (nonzero) digits is 918540, while the sum is 53.

The square root of 197490959 is about 14053.1476545292. The cubic root of 197490959 is about 582.3477558985.

The spelling of 197490959 in words is "one hundred ninety-seven million, four hundred ninety thousand, nine hundred fifty-nine".