409317397 has 16 divisors (see below), whose sum is σ = 444556800. Its totient is φ = 375923520.

The previous prime is 409317373. The next prime is 409317401. The reversal of 409317397 is 793713904.

It is not a de Polignac number, because 409317397 - 2²³ = 400928789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409317367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49183 + ... + 56899.

It is an arithmetic number, because the mean of its divisors is an integer number (27784800).

Almost surely, 2^409317397 is an apocalyptic number.

It is an amenable number.

409317397 is a deficient number, since it is larger than the sum of its proper divisors (35239403).

409317397 is a wasteful number, since it uses less digits than its factorization.

409317397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836.

The product of its (nonzero) digits is 142884, while the sum is 43.

The square root of 409317397 is about 20231.5940301302. The cubic root of 409317397 is about 742.4833763052.

The spelling of 409317397 in words is "four hundred nine million, three hundred seventeen thousand, three hundred ninety-seven".