401440530 has 32 divisors (see below), whose sum is σ = 964519488. Its totient is φ = 106932800.

The previous prime is 401440517. The next prime is 401440537. The reversal of 401440530 is 35044104.

It is a super-2 number, since 2×401440530² = 322308998253361800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401440497 and 401440506.

It is not an unprimeable number, because it can be changed into a prime (401440537) 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 15 ways as a sum of consecutive naturals, for example, 22240 + ... + 36020.

It is an arithmetic number, because the mean of its divisors is an integer number (30141234).

Almost surely, 2^401440530 is an apocalyptic number.

401440530 is an abundant number, since it is smaller than the sum of its proper divisors (563078958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401440530 is a wasteful number, since it uses less digits than its factorization.

401440530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14762.

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

The square root of 401440530 is about 20035.9808843989. The cubic root of 401440530 is about 737.6897330476.

Adding to 401440530 its reverse (35044104), we get a palindrome (436484634).

It can be divided in two parts, 4014 and 40530, that added together give a palindrome (44544).

The spelling of 401440530 in words is "four hundred one million, four hundred forty thousand, five hundred thirty".