2011404401 has 4 divisors (see below), whose sum is σ = 2024216052. Its totient is φ = 1998592752.

The previous prime is 2011404389. The next prime is 2011404443. The reversal of 2011404401 is 1044041102.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1503578176 + 507826225 = 38776^2 + 22535^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011404401 - 2¹⁰ = 2011403377 is a prime.

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 2011404401.

It is not an unprimeable number, because it can be changed into a prime (2011404601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6405590 + ... + 6405903.

It is an arithmetic number, because the mean of its divisors is an integer number (506054013).

Almost surely, 2^2011404401 is an apocalyptic number.

It is an amenable number.

2011404401 is a deficient number, since it is larger than the sum of its proper divisors (12811651).

2011404401 is a wasteful number, since it uses less digits than its factorization.

2011404401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811650.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2011404401 is about 44848.6833808976. The cubic root of 2011404401 is about 1262.3112865794.

Adding to 2011404401 its reverse (1044041102), we get a palindrome (3055445503).

The spelling of 2011404401 in words is "two billion, eleven million, four hundred four thousand, four hundred one".