401776 has 10 divisors (see below), whose sum is σ = 778472. Its totient is φ = 200880.

The previous prime is 401773. The next prime is 401809. The reversal of 401776 is 677104.

401776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×401776² = 322847908352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12540 + ... + 12571.

2⁴⁰¹⁷⁷⁶ is an apocalyptic number.

It is an amenable number.

401776 is a deficient number, since it is larger than the sum of its proper divisors (376696).

401776 is a wasteful number, since it uses less digits than its factorization.

401776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25119 (or 25113 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 401776 is about 633.8580282682. The cubic root of 401776 is about 73.7895163120.

The spelling of 401776 in words is "four hundred one thousand, seven hundred seventy-six".