401011 has 8 divisors (see below), whose sum is σ = 437360. Its totient is φ = 365472.

The previous prime is 400997. The next prime is 401017. The reversal of 401011 is 110104.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401011 - 2¹⁵ = 368243 is a prime.

It is a Duffinian number.

401011 is a lucky number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 400985 and 401003.

It is not an unprimeable number, because it can be changed into a prime (401017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (54670).

2⁴⁰¹⁰¹¹ is an apocalyptic number.

401011 is a deficient number, since it is larger than the sum of its proper divisors (36349).

401011 is a wasteful number, since it uses less digits than its factorization.

401011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 401011 is about 633.2542933135. The cubic root of 401011 is about 73.7426536779.

Adding to 401011 its reverse (110104), we get a palindrome (511115).

The spelling of 401011 in words is "four hundred one thousand, eleven", and thus it is an iban number.