409146197 has 4 divisors (see below), whose sum is σ = 410286240. Its totient is φ = 408006156.

The previous prime is 409146187. The next prime is 409146203. The reversal of 409146197 is 791641904.

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 409146197 - 2²² = 404951893 is a prime.

It is a super-2 number, since 2×409146197² = 334801221039125618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409146107) 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 3 ways as a sum of consecutive naturals, for example, 569483 + ... + 570200.

It is an arithmetic number, because the mean of its divisors is an integer number (102571560).

Almost surely, 2^409146197 is an apocalyptic number.

It is an amenable number.

409146197 is a deficient number, since it is larger than the sum of its proper divisors (1140043).

409146197 is a wasteful number, since it uses less digits than its factorization.

409146197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140042.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 409146197 is about 20227.3625814143. The cubic root of 409146197 is about 742.3798454991.

The spelling of 409146197 in words is "four hundred nine million, one hundred forty-six thousand, one hundred ninety-seven".