449393197 has 4 divisors (see below), whose sum is σ = 490247136. Its totient is φ = 408539260.

The previous prime is 449393173. The next prime is 449393209. The reversal of 449393197 is 791393944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449393197 - 2⁷ = 449393069 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 449393197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449393117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20426953 + ... + 20426974.

It is an arithmetic number, because the mean of its divisors is an integer number (122561784).

Almost surely, 2^449393197 is an apocalyptic number.

It is an amenable number.

449393197 is a deficient number, since it is larger than the sum of its proper divisors (40853939).

449393197 is a wasteful number, since it uses less digits than its factorization.

449393197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40853938.

The product of its digits is 734832, while the sum is 49.

The square root of 449393197 is about 21198.8961269213. The cubic root of 449393197 is about 765.9648338538.

The spelling of 449393197 in words is "four hundred forty-nine million, three hundred ninety-three thousand, one hundred ninety-seven".