405490333 has 4 divisors (see below), whose sum is σ = 413141148. Its totient is φ = 397839520.

The previous prime is 405490321. The next prime is 405490339. The reversal of 405490333 is 333094504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 354267684 + 51222649 = 18822^2 + 7157^2 .

It is a cyclic number.

It is not a de Polignac number, because 405490333 - 2¹⁷ = 405359261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405490295 and 405490304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405490339) 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, 3825328 + ... + 3825433.

It is an arithmetic number, because the mean of its divisors is an integer number (103285287).

Almost surely, 2^405490333 is an apocalyptic number.

It is an amenable number.

405490333 is a deficient number, since it is larger than the sum of its proper divisors (7650815).

405490333 is an equidigital number, since it uses as much as digits as its factorization.

405490333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7650814.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 405490333 is about 20136.7905337469. The cubic root of 405490333 is about 740.1620858731.

The spelling of 405490333 in words is "four hundred five million, four hundred ninety thousand, three hundred thirty-three".