404036391093 has 4 divisors (see below), whose sum is σ = 538715188128. Its totient is φ = 269357594060.

The previous prime is 404036391091. The next prime is 404036391097. The reversal of 404036391093 is 390193630404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 404036391093 - 2¹ = 404036391091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404036391091) 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, 67339398513 + ... + 67339398518.

It is an arithmetic number, because the mean of its divisors is an integer number (134678797032).

Almost surely, 2^404036391093 is an apocalyptic number.

It is an amenable number.

404036391093 is a deficient number, since it is larger than the sum of its proper divisors (134678797035).

404036391093 is a wasteful number, since it uses less digits than its factorization.

404036391093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134678797034.

The product of its (nonzero) digits is 209952, while the sum is 42.

The spelling of 404036391093 in words is "four hundred four billion, thirty-six million, three hundred ninety-one thousand, ninety-three".