409097131 has 4 divisors (see below), whose sum is σ = 409304392. Its totient is φ = 408889872.

The previous prime is 409097093. The next prime is 409097147. The reversal of 409097131 is 131790904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 409097131 - 2¹⁵ = 409064363 is a prime.

It is a super-2 number, since 2×409097131² = 334720925184862322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (409097431) 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, 100641 + ... + 104626.

It is an arithmetic number, because the mean of its divisors is an integer number (102326098).

Almost surely, 2^409097131 is an apocalyptic number.

409097131 is a deficient number, since it is larger than the sum of its proper divisors (207261).

409097131 is a wasteful number, since it uses less digits than its factorization.

409097131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207260.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 409097131 is about 20226.1496830217. The cubic root of 409097131 is about 742.3501681972.

The spelling of 409097131 in words is "four hundred nine million, ninety-seven thousand, one hundred thirty-one".