44400213423 has 20 divisors (see below), whose sum is σ = 67010032320. Its totient is φ = 29294980992.

The previous prime is 44400213359. The next prime is 44400213463. The reversal of 44400213423 is 32431200444.

It is a happy number.

44400213423 is a `hidden beast` number, since 4 + 4 + 400 + 213 + 42 + 3 = 666.

It is not a de Polignac number, because 44400213423 - 2⁶ = 44400213359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44400213463) 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 19 ways as a sum of consecutive naturals, for example, 2817663 + ... + 2833376.

It is an arithmetic number, because the mean of its divisors is an integer number (3350501616).

Almost surely, 2^44400213423 is an apocalyptic number.

44400213423 is a deficient number, since it is larger than the sum of its proper divisors (22609818897).

44400213423 is an equidigital number, since it uses as much as digits as its factorization.

44400213423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5651148 (or 5651139 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 44400213423 its reverse (32431200444), we get a palindrome (76831413867).

It can be divided in two parts, 4440021 and 3423, that added together give a palindrome (4443444).

The spelling of 44400213423 in words is "forty-four billion, four hundred million, two hundred thirteen thousand, four hundred twenty-three".