405541401 has 8 divisors (see below), whose sum is σ = 540999840. Its totient is φ = 270221952.

The previous prime is 405541391. The next prime is 405541417. The reversal of 405541401 is 104145504.

It is a happy number.

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

It is not a de Polignac number, because 405541401 - 2⁵ = 405541369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405541501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27736 + ... + 39753.

It is an arithmetic number, because the mean of its divisors is an integer number (67624980).

Almost surely, 2^405541401 is an apocalyptic number.

It is an amenable number.

405541401 is a deficient number, since it is larger than the sum of its proper divisors (135458439).

405541401 is a wasteful number, since it uses less digits than its factorization.

405541401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69495.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 405541401 is about 20138.0585211187. The cubic root of 405541401 is about 740.1931569062.

Adding to 405541401 its reverse (104145504), we get a palindrome (509686905).

The spelling of 405541401 in words is "four hundred five million, five hundred forty-one thousand, four hundred one".