401488812 has 120 divisors (see below), whose sum is σ = 1100639232. Its totient is φ = 127461600.

The previous prime is 401488811. The next prime is 401488849. The reversal of 401488812 is 218884104.

It is a happy number.

It is a super-2 number, since 2×401488812² = 322386532322342688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401488811) 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 39 ways as a sum of consecutive naturals, for example, 712843 + ... + 713405.

Almost surely, 2^401488812 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 401488812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550319616).

401488812 is an abundant number, since it is smaller than the sum of its proper divisors (699150420).

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

401488812 is a wasteful number, since it uses less digits than its factorization.

401488812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 401488812 is about 20037.1857305361. The cubic root of 401488812 is about 737.7193063012.

The spelling of 401488812 in words is "four hundred one million, four hundred eighty-eight thousand, eight hundred twelve".