404012011 has 4 divisors (see below), whose sum is σ = 435089872. Its totient is φ = 372934152.

The previous prime is 404012009. The next prime is 404012023. The reversal of 404012011 is 110210404.

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 404012011 - 2¹ = 404012009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 31077847 = 404012011 / (4 + 0 + 4 + 0 + 1 + 2 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404011982 and 404012000.

It is not an unprimeable number, because it can be changed into a prime (404012051) 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, 15538911 + ... + 15538936.

It is an arithmetic number, because the mean of its divisors is an integer number (108772468).

Almost surely, 2^404012011 is an apocalyptic number.

404012011 is a deficient number, since it is larger than the sum of its proper divisors (31077861).

404012011 is a wasteful number, since it uses less digits than its factorization.

404012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31077860.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 404012011 is about 20100.0500248134. The cubic root of 404012011 is about 739.2615051565.

Adding to 404012011 its reverse (110210404), we get a palindrome (514222415).

The spelling of 404012011 in words is "four hundred four million, twelve thousand, eleven".