409197 has 4 divisors (see below), whose sum is σ = 545600. Its totient is φ = 272796.

The previous prime is 409187. The next prime is 409217. The reversal of 409197 is 791904.

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 not a de Polignac number, because 409197 - 2⁷ = 409069 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409177) 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, 68197 + ... + 68202.

It is an arithmetic number, because the mean of its divisors is an integer number (136400).

2⁴⁰⁹¹⁹⁷ is an apocalyptic number.

It is an amenable number.

409197 is a deficient number, since it is larger than the sum of its proper divisors (136403).

409197 is a wasteful number, since it uses less digits than its factorization.

409197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136402.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 409197 is about 639.6850787692. The cubic root of 409197 is about 74.2410570916.

It can be divided in two parts, 409 and 197, that added together give a palindrome (606).

The spelling of 409197 in words is "four hundred nine thousand, one hundred ninety-seven".