404240121193 has 4 divisors (see below), whose sum is σ = 413641054288. Its totient is φ = 394839188100.

The previous prime is 404240121163. The next prime is 404240121217. The reversal of 404240121193 is 391121042404.

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 not a de Polignac number, because 404240121193 - 2²⁹ = 403703250281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404240121163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4700466483 + ... + 4700466568.

It is an arithmetic number, because the mean of its divisors is an integer number (103410263572).

Almost surely, 2^404240121193 is an apocalyptic number.

404240121193 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

404240121193 is a deficient number, since it is larger than the sum of its proper divisors (9400933095).

404240121193 is an equidigital number, since it uses as much as digits as its factorization.

404240121193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9400933094.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 404240121193 its reverse (391121042404), we get a palindrome (795361163597).

The spelling of 404240121193 in words is "four hundred four billion, two hundred forty million, one hundred twenty-one thousand, one hundred ninety-three".