405430401 has 4 divisors (see below), whose sum is σ = 540573872. Its totient is φ = 270286932.

The previous prime is 405430397. The next prime is 405430429. The reversal of 405430401 is 104034504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 405430401 - 2² = 405430397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405430471) 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, 67571731 + ... + 67571736.

It is an arithmetic number, because the mean of its divisors is an integer number (135143468).

Almost surely, 2^405430401 is an apocalyptic number.

It is an amenable number.

405430401 is a deficient number, since it is larger than the sum of its proper divisors (135143471).

405430401 is a wasteful number, since it uses less digits than its factorization.

405430401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135143470.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 405430401 is about 20135.3023568061. The cubic root of 405430401 is about 740.1256184359.

Adding to 405430401 its reverse (104034504), we get a palindrome (509464905).

The spelling of 405430401 in words is "four hundred five million, four hundred thirty thousand, four hundred one".