401440332 has 24 divisors (see below), whose sum is σ = 938168896. Its totient is φ = 133602768.

The previous prime is 401440331. The next prime is 401440339. The reversal of 401440332 is 233044104.

It is a super-2 number, since 2×401440332² = 322308680312540448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401440299 and 401440308.

It is not an unprimeable number, because it can be changed into a prime (401440331) 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, 18298 + ... + 33729.

Almost surely, 2^401440332 is an apocalyptic number.

It is an amenable number.

401440332 is an abundant number, since it is smaller than the sum of its proper divisors (536728564).

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

401440332 is a wasteful number, since it uses less digits than its factorization.

401440332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52677 (or 52675 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 401440332 is about 20035.9759432876. The cubic root of 401440332 is about 737.6896117655.

Adding to 401440332 its reverse (233044104), we get a palindrome (634484436).

The spelling of 401440332 in words is "four hundred one million, four hundred forty thousand, three hundred thirty-two".