409338397 has 8 divisors (see below), whose sum is σ = 441068544. Its totient is φ = 377642928.

The previous prime is 409338389. The next prime is 409338439. The reversal of 409338397 is 793833904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 409338397 - 2³ = 409338389 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 (409338317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19188 + ... + 34450.

It is an arithmetic number, because the mean of its divisors is an integer number (55133568).

Almost surely, 2^409338397 is an apocalyptic number.

It is an amenable number.

409338397 is a deficient number, since it is larger than the sum of its proper divisors (31730147).

409338397 is a wasteful number, since it uses less digits than its factorization.

409338397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17339.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 409338397 is about 20232.1130137215. The cubic root of 409338397 is about 742.4960737737.

The spelling of 409338397 in words is "four hundred nine million, three hundred thirty-eight thousand, three hundred ninety-seven".