401810388 has 36 divisors (see below), whose sum is σ = 1090629792. Its totient is φ = 114802800.

The previous prime is 401810377. The next prime is 401810413. The reversal of 401810388 is 883018104.

It is a happy number.

It is a super-2 number, since 2×401810388² = 322903175809421088, which contains 22 as substring.

It is a congruent number.

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, 341088 + ... + 342263.

It is an arithmetic number, because the mean of its divisors is an integer number (30295272).

Almost surely, 2^401810388 is an apocalyptic number.

It is an amenable number.

401810388 is an abundant number, since it is smaller than the sum of its proper divisors (688819404).

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

401810388 is a wasteful number, since it uses less digits than its factorization.

401810388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683372 (or 683363 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 401810388 is about 20045.2086045519. The cubic root of 401810388 is about 737.9162146640.

The spelling of 401810388 in words is "four hundred one million, eight hundred ten thousand, three hundred eighty-eight".