405306434 has 8 divisors (see below), whose sum is σ = 654725820. Its totient is φ = 187064496.

The previous prime is 405306409. The next prime is 405306487. The reversal of 405306434 is 434603504.

It can be written as a sum of positive squares in 2 ways, for example, as 388208209 + 17098225 = 19703^2 + 4135^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 405306397 and 405306406.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7794329 + ... + 7794380.

Almost surely, 2^405306434 is an apocalyptic number.

405306434 is a deficient number, since it is larger than the sum of its proper divisors (249419386).

405306434 is a wasteful number, since it uses less digits than its factorization.

405306434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15588724.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 405306434 is about 20132.2237718539. The cubic root of 405306434 is about 740.0501755605.

Adding to 405306434 its reverse (434603504), we get a palindrome (839909938).

It can be divided in two parts, 40530 and 6434, that added together give a palindrome (46964).

The spelling of 405306434 in words is "four hundred five million, three hundred six thousand, four hundred thirty-four".