44404121819 has 4 divisors (see below), whose sum is σ = 44523168096. Its totient is φ = 44285075544.

The previous prime is 44404121809. The next prime is 44404121821. The reversal of 44404121819 is 91812140444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44404121819 is a prime.

It is a super-2 number, since 2×44404121819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44404121809) 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, 59522579 + ... + 59523324.

It is an arithmetic number, because the mean of its divisors is an integer number (11130792024).

Almost surely, 2^44404121819 is an apocalyptic number.

44404121819 is a deficient number, since it is larger than the sum of its proper divisors (119046277).

44404121819 is a wasteful number, since it uses less digits than its factorization.

44404121819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119046276.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 44404121819 in words is "forty-four billion, four hundred four million, one hundred twenty-one thousand, eight hundred nineteen".