44394403921 has 8 divisors (see below), whose sum is σ = 50747379584. Its totient is φ = 38044157760.

The previous prime is 44394403919. The next prime is 44394403951. The reversal of 44394403921 is 12930449344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44394403921 - 2¹ = 44394403919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44394403951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647400 + ... + 712681.

It is an arithmetic number, because the mean of its divisors is an integer number (6343422448).

Almost surely, 2^44394403921 is an apocalyptic number.

It is an amenable number.

44394403921 is a deficient number, since it is larger than the sum of its proper divisors (6352975663).

44394403921 is a wasteful number, since it uses less digits than its factorization.

44394403921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364751.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 44394403921 in words is "forty-four billion, three hundred ninety-four million, four hundred three thousand, nine hundred twenty-one".