405069 has 8 divisors (see below), whose sum is σ = 617280. Its totient is φ = 231456.

The previous prime is 405049. The next prime is 405071. The reversal of 405069 is 960504.

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

It is not a de Polignac number, because 405069 - 2⁵ = 405037 is a prime.

It is a super-2 number, since 2×405069² = 328161789522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405029) 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, 9624 + ... + 9665.

It is an arithmetic number, because the mean of its divisors is an integer number (77160).

2⁴⁰⁵⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

405069 is a deficient number, since it is larger than the sum of its proper divisors (212211).

405069 is a wasteful number, since it uses less digits than its factorization.

405069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19299.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 405069 is about 636.4503122790. The cubic root of 405069 is about 73.9905636860.

The spelling of 405069 in words is "four hundred five thousand, sixty-nine".