401043863 has 4 divisors (see below), whose sum is σ = 437502408. Its totient is φ = 364585320.

The previous prime is 401043859. The next prime is 401043883. The reversal of 401043863 is 368340104.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 401043863 - 2² = 401043859 is a prime.

It is a super-4 number, since 4×401043863⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401043803) 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 3 ways as a sum of consecutive naturals, for example, 18229256 + ... + 18229277.

It is an arithmetic number, because the mean of its divisors is an integer number (109375602).

Almost surely, 2^401043863 is an apocalyptic number.

401043863 is a deficient number, since it is larger than the sum of its proper divisors (36458545).

401043863 is a wasteful number, since it uses less digits than its factorization.

401043863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36458544.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 401043863 is about 20026.0795713989. The cubic root of 401043863 is about 737.4466803547.

Adding to 401043863 its reverse (368340104), we get a palindrome (769383967).

The spelling of 401043863 in words is "four hundred one million, forty-three thousand, eight hundred sixty-three".