401348040440 has 32 divisors (see below), whose sum is σ = 918338742000. Its totient is φ = 157818211584.

The previous prime is 401348040433. The next prime is 401348040479. The reversal of 401348040440 is 44040843104.

It is a super-2 number, since 2×401348040440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401348040397 and 401348040406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85029005 + ... + 85033724.

Almost surely, 2^401348040440 is an apocalyptic number.

401348040440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401348040440 is an abundant number, since it is smaller than the sum of its proper divisors (516990701560).

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

401348040440 is a wasteful number, since it uses less digits than its factorization.

401348040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170062799 (or 170062795 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 401348040440 its reverse (44040843104), we get a palindrome (445388883544).

The spelling of 401348040440 in words is "four hundred one billion, three hundred forty-eight million, forty thousand, four hundred forty".