401404463 has 4 divisors (see below), whose sum is σ = 402138840. Its totient is φ = 400670088.

The previous prime is 401404447. The next prime is 401404477. The reversal of 401404463 is 364404104.

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

It is a cyclic number.

It is not a de Polignac number, because 401404463 - 2⁴ = 401404447 is a prime.

It is a super-2 number, since 2×401404463² = 322251085832636738, which contains 22 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 (401400463) 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, 366368 + ... + 367461.

It is an arithmetic number, because the mean of its divisors is an integer number (100534710).

Almost surely, 2^401404463 is an apocalyptic number.

401404463 is a deficient number, since it is larger than the sum of its proper divisors (734377).

401404463 is an equidigital number, since it uses as much as digits as its factorization.

401404463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734376.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 401404463 is about 20035.0808084220. The cubic root of 401404463 is about 737.6676400679.

Adding to 401404463 its reverse (364404104), we get a palindrome (765808567).

The spelling of 401404463 in words is "four hundred one million, four hundred four thousand, four hundred sixty-three".