405419 has 4 divisors (see below), whose sum is σ = 463344. Its totient is φ = 347496.

The previous prime is 405413. The next prime is 405437. The reversal of 405419 is 914504.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405419 is a prime.

It is a super-2 number, since 2×405419² = 328729131122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405394 and 405403.

It is not an unprimeable number, because it can be changed into a prime (405413) 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, 28952 + ... + 28965.

It is an arithmetic number, because the mean of its divisors is an integer number (115836).

2⁴⁰⁵⁴¹⁹ is an apocalyptic number.

405419 is a deficient number, since it is larger than the sum of its proper divisors (57925).

405419 is an equidigital number, since it uses as much as digits as its factorization.

405419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57924.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 405419 is about 636.7252154580. The cubic root of 405419 is about 74.0118680746.

The spelling of 405419 in words is "four hundred five thousand, four hundred nineteen".