4400743821 has 16 divisors (see below), whose sum is σ = 5986884288. Its totient is φ = 2874816000.

The previous prime is 4400743817. The next prime is 4400743877. The reversal of 4400743821 is 1283470044.

It is not a de Polignac number, because 4400743821 - 2² = 4400743817 is a prime.

It is a super-3 number, since 3×4400743821³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400743021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45475 + ... + 104256.

It is an arithmetic number, because the mean of its divisors is an integer number (374180268).

Almost surely, 2^4400743821 is an apocalyptic number.

It is an amenable number.

4400743821 is a deficient number, since it is larger than the sum of its proper divisors (1586140467).

4400743821 is a wasteful number, since it uses less digits than its factorization.

4400743821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149932.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 4400743821 is about 66338.1023319178. The cubic root of 4400743821 is about 1638.7348736299.

The spelling of 4400743821 in words is "four billion, four hundred million, seven hundred forty-three thousand, eight hundred twenty-one".