409427 has 4 divisors (see below), whose sum is σ = 410880. Its totient is φ = 407976.

The previous prime is 409397. The next prime is 409429. The reversal of 409427 is 724904.

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 409427 - 2¹⁰ = 408403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409396 and 409405.

It is not an unprimeable number, because it can be changed into a prime (409429) 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, 152 + ... + 917.

It is an arithmetic number, because the mean of its divisors is an integer number (102720).

2⁴⁰⁹⁴²⁷ is an apocalyptic number.

409427 is a deficient number, since it is larger than the sum of its proper divisors (1453).

409427 is a wasteful number, since it uses less digits than its factorization.

409427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 409427 is about 639.8648294757. The cubic root of 409427 is about 74.2549642031.

The spelling of 409427 in words is "four hundred nine thousand, four hundred twenty-seven".