409685307 has 8 divisors (see below), whose sum is σ = 546341376. Its totient is φ = 273076392.

The previous prime is 409685303. The next prime is 409685327. The reversal of 409685307 is 703586904.

It is a happy number.

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

It is not a de Polignac number, because 409685307 - 2² = 409685303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (409685303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24078 + ... + 37404.

It is an arithmetic number, because the mean of its divisors is an integer number (68292672).

Almost surely, 2^409685307 is an apocalyptic number.

409685307 is a deficient number, since it is larger than the sum of its proper divisors (136656069).

409685307 is a wasteful number, since it uses less digits than its factorization.

409685307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23577.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 409685307 is about 20240.6844498895. The cubic root of 409685307 is about 742.7057670933.

The spelling of 409685307 in words is "four hundred nine million, six hundred eighty-five thousand, three hundred seven".