404040006091 has 4 divisors (see below), whose sum is σ = 404053992000. Its totient is φ = 404026020184.

The previous prime is 404040006079. The next prime is 404040006113. The reversal of 404040006091 is 190600040404.

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 404040006091 - 2¹³ = 404039997899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404040006001) 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, 6949531 + ... + 7007428.

It is an arithmetic number, because the mean of its divisors is an integer number (101013498000).

Almost surely, 2^404040006091 is an apocalyptic number.

404040006091 is a deficient number, since it is larger than the sum of its proper divisors (13985909).

404040006091 is a wasteful number, since it uses less digits than its factorization.

404040006091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985908.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 404040006091 its reverse (190600040404), we get a palindrome (594640046495).

The spelling of 404040006091 in words is "four hundred four billion, forty million, six thousand, ninety-one".