405345434 has 64 divisors (see below), whose sum is σ = 707857920. Its totient is φ = 172730880.

The previous prime is 405345407. The next prime is 405345439. The reversal of 405345434 is 434543504.

It is a self number, because there is not a number n which added to its sum of digits gives 405345434.

It is not an unprimeable number, because it can be changed into a prime (405345439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1695887 + ... + 1696125.

It is an arithmetic number, because the mean of its divisors is an integer number (11060280).

Almost surely, 2^405345434 is an apocalyptic number.

405345434 is a deficient number, since it is larger than the sum of its proper divisors (302512486).

405345434 is a wasteful number, since it uses less digits than its factorization.

405345434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375.

The product of its (nonzero) digits is 57600, while the sum is 32.

The square root of 405345434 is about 20133.1923449810. The cubic root of 405345434 is about 740.0739115364.

Adding to 405345434 its reverse (434543504), we get a palindrome (839888938).

The spelling of 405345434 in words is "four hundred five million, three hundred forty-five thousand, four hundred thirty-four".