197987349 has 16 divisors (see below), whose sum is σ = 301916160. Its totient is φ = 113052720.

The previous prime is 197987329. The next prime is 197987399. The reversal of 197987349 is 943789791.

It is not a de Polignac number, because 197987349 - 2¹⁹ = 197463061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197987329) 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 15 ways as a sum of consecutive naturals, for example, 36772 + ... + 41810.

It is an arithmetic number, because the mean of its divisors is an integer number (18869760).

Almost surely, 2^197987349 is an apocalyptic number.

It is an amenable number.

197987349 is a deficient number, since it is larger than the sum of its proper divisors (103928811).

197987349 is a wasteful number, since it uses less digits than its factorization.

197987349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6920.

The product of its digits is 3429216, while the sum is 57.

The square root of 197987349 is about 14070.7977385790. The cubic root of 197987349 is about 582.8352545829.

The spelling of 197987349 in words is "one hundred ninety-seven million, nine hundred eighty-seven thousand, three hundred forty-nine".