401843559 has 16 divisors (see below), whose sum is σ = 607376000. Its totient is φ = 234272736.

The previous prime is 401843543. The next prime is 401843567. The reversal of 401843559 is 955348104.

It is not a de Polignac number, because 401843559 - 2⁴ = 401843543 is a prime.

It is a super-2 number, since 2×401843559² = 322956491819572962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401843759) 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 15 ways as a sum of consecutive naturals, for example, 270409 + ... + 271890.

It is an arithmetic number, because the mean of its divisors is an integer number (37961000).

Almost surely, 2^401843559 is an apocalyptic number.

401843559 is a deficient number, since it is larger than the sum of its proper divisors (205532441).

401843559 is a wasteful number, since it uses less digits than its factorization.

401843559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542334.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 401843559 is about 20046.0359921856. The cubic root of 401843559 is about 737.9365200501.

The spelling of 401843559 in words is "four hundred one million, eight hundred forty-three thousand, five hundred fifty-nine".