44398889890 has 16 divisors (see below), whose sum is σ = 80625242808. Its totient is φ = 17602391296.

The previous prime is 44398889839. The next prime is 44398889893. The reversal of 44398889890 is 9898889344.

It can be written as a sum of positive squares in 4 ways, for example, as 33746792209 + 10652097681 = 183703^2 + 103209^2 .

It is a super-2 number, since 2×44398889890² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44398889893) 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, 19644397 + ... + 19646656.

Almost surely, 2^44398889890 is an apocalyptic number.

44398889890 is a deficient number, since it is larger than the sum of its proper divisors (36226352918).

44398889890 is a wasteful number, since it uses less digits than its factorization.

44398889890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39291173.

The product of its (nonzero) digits is 143327232, while the sum is 70.

The spelling of 44398889890 in words is "forty-four billion, three hundred ninety-eight million, eight hundred eighty-nine thousand, eight hundred ninety".