401138011 has 4 divisors (see below), whose sum is σ = 401387400. Its totient is φ = 400888624.

The previous prime is 401137987. The next prime is 401138021. The reversal of 401138011 is 110831104.

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 401138011 - 2⁷ = 401137883 is a prime.

It is a super-2 number, since 2×401138011² = 321823407738072242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401138011.

It is not an unprimeable number, because it can be changed into a prime (401138021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122266 + ... + 125503.

It is an arithmetic number, because the mean of its divisors is an integer number (100346850).

Almost surely, 2^401138011 is an apocalyptic number.

401138011 is a deficient number, since it is larger than the sum of its proper divisors (249389).

401138011 is a wasteful number, since it uses less digits than its factorization.

401138011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249388.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 401138011 is about 20028.4300682804. The cubic root of 401138011 is about 737.5043828524.

Adding to 401138011 its reverse (110831104), we get a palindrome (511969115).

The spelling of 401138011 in words is "four hundred one million, one hundred thirty-eight thousand, eleven".