401435440 has 60 divisors (see below), whose sum is σ = 1085729616. Its totient is φ = 137633664.

The previous prime is 401435407. The next prime is 401435453. The reversal of 401435440 is 44534104.

It is a super-2 number, since 2×401435440² = 322300824975987200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47284 + ... + 55123.

Almost surely, 2^401435440 is an apocalyptic number.

401435440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401435440 is an abundant number, since it is smaller than the sum of its proper divisors (684294176).

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

401435440 is a wasteful number, since it uses less digits than its factorization.

401435440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102434 (or 102421 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 401435440 is about 20035.8538625136. The cubic root of 401435440 is about 737.6866152287.

Adding to 401435440 its reverse (44534104), we get a palindrome (445969544).

The spelling of 401435440 in words is "four hundred one million, four hundred thirty-five thousand, four hundred forty".