404045311 has 4 divisors (see below), whose sum is σ = 406464912. Its totient is φ = 401625712.

The previous prime is 404045269. The next prime is 404045321. The reversal of 404045311 is 113540404.

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 404045311 - 2⁷ = 404045183 is a prime.

It is a super-2 number, since 2×404045311² = 326505226682173442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404045321) 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, 1209550 + ... + 1209883.

It is an arithmetic number, because the mean of its divisors is an integer number (101616228).

Almost surely, 2^404045311 is an apocalyptic number.

404045311 is a deficient number, since it is larger than the sum of its proper divisors (2419601).

404045311 is a wasteful number, since it uses less digits than its factorization.

404045311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419600.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 404045311 is about 20100.8783638925. The cubic root of 404045311 is about 739.2818153875.

Adding to 404045311 its reverse (113540404), we get a palindrome (517585715).

The spelling of 404045311 in words is "four hundred four million, forty-five thousand, three hundred eleven".