401039340 has 192 divisors, whose sum is σ = 1257379200. Its totient is φ = 94887936.

The previous prime is 401039329. The next prime is 401039363. The reversal of 401039340 is 43930104.

It is a self number, because there is not a number n which added to its sum of digits gives 401039340.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3679206 + ... + 3679314.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^401039340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401039340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628689600).

401039340 is an abundant number, since it is smaller than the sum of its proper divisors (856339860).

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

401039340 is a wasteful number, since it uses less digits than its factorization.

401039340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 401039340 is about 20025.9666433358. The cubic root of 401039340 is about 737.4439080197.

Adding to 401039340 its reverse (43930104), we get a palindrome (444969444).

The spelling of 401039340 in words is "four hundred one million, thirty-nine thousand, three hundred forty".