197490955 has 8 divisors (see below), whose sum is σ = 250929792. Its totient is φ = 148699008.

The previous prime is 197490929. The next prime is 197490991. The reversal of 197490955 is 559094791.

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-197490955 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197490899 and 197490908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1161627 + ... + 1161796.

It is an arithmetic number, because the mean of its divisors is an integer number (31366224).

Almost surely, 2^197490955 is an apocalyptic number.

197490955 is a deficient number, since it is larger than the sum of its proper divisors (53438837).

197490955 is a wasteful number, since it uses less digits than its factorization.

197490955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323445.

The product of its (nonzero) digits is 510300, while the sum is 49.

The square root of 197490955 is about 14053.1475122123. The cubic root of 197490955 is about 582.3477519669.

It can be divided in two parts, 1974 and 90955, that added together give a palindrome (92929).

The spelling of 197490955 in words is "one hundred ninety-seven million, four hundred ninety thousand, nine hundred fifty-five".