401530405 has 8 divisors (see below), whose sum is σ = 484622712. Its totient is φ = 319366848.

The previous prime is 401530403. The next prime is 401530417. The reversal of 401530405 is 504035104.

It can be written as a sum of positive squares in 4 ways, for example, as 154977601 + 246552804 = 12449^2 + 15702^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 401530405 - 2¹ = 401530403 is a prime.

It is a super-2 number, since 2×401530405² = 322453332278928050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401530403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231234 + ... + 232963.

It is an arithmetic number, because the mean of its divisors is an integer number (60577839).

Almost surely, 2^401530405 is an apocalyptic number.

It is an amenable number.

401530405 is a deficient number, since it is larger than the sum of its proper divisors (83092307).

401530405 is a wasteful number, since it uses less digits than its factorization.

401530405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464375.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 401530405 is about 20038.2235989122. The cubic root of 401530405 is about 737.7447805682.

Adding to 401530405 its reverse (504035104), we get a palindrome (905565509).

The spelling of 401530405 in words is "four hundred one million, five hundred thirty thousand, four hundred five".