405304091 has 8 divisors (see below), whose sum is σ = 430907040. Its totient is φ = 380366272.

The previous prime is 405304063. The next prime is 405304127. The reversal of 405304091 is 190403504.

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

It is a de Polignac number, because none of the positive numbers 2^k-405304091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405304091.

It is not an unprimeable number, because it can be changed into a prime (405324091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165026 + ... + 167463.

It is an arithmetic number, because the mean of its divisors is an integer number (53863380).

Almost surely, 2^405304091 is an apocalyptic number.

405304091 is a deficient number, since it is larger than the sum of its proper divisors (25602949).

405304091 is a wasteful number, since it uses less digits than its factorization.

405304091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332565.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 405304091 is about 20132.1655814768. The cubic root of 405304091 is about 740.0487495276.

Adding to 405304091 its reverse (190403504), we get a palindrome (595707595).

The spelling of 405304091 in words is "four hundred five million, three hundred four thousand, ninety-one".