401250280388 has 12 divisors (see below), whose sum is σ = 702323349420. Its totient is φ = 200586466272.

The previous prime is 401250280351. The next prime is 401250280439. The reversal of 401250280388 is 883082052104.

It can be written as a sum of positive squares in 2 ways, for example, as 125917103104 + 275333177284 = 354848^2 + 524722^2 .

It is a super-2 number, since 2×401250280388² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9645131 + ... + 9686642.

It is an arithmetic number, because the mean of its divisors is an integer number (58526945785).

Almost surely, 2^401250280388 is an apocalyptic number.

It is an amenable number.

401250280388 is a deficient number, since it is larger than the sum of its proper divisors (301073069032).

401250280388 is a wasteful number, since it uses less digits than its factorization.

401250280388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19336966 (or 19336964 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 401250280388 in words is "four hundred one billion, two hundred fifty million, two hundred eighty thousand, three hundred eighty-eight".