44398889892 has 72 divisors (see below), whose sum is σ = 128621001600. Its totient is φ = 12650035968.

The previous prime is 44398889839. The next prime is 44398889893. The reversal of 44398889892 is 29898889344.

44398889892 is a `hidden beast` number, since 443 + 9 + 8 + 8 + 8 + 98 + 92 = 666.

It is a super-2 number, since 2×44398889892² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44398889892.

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 23 ways as a sum of consecutive naturals, for example, 154917 + ... + 335852.

It is an arithmetic number, because the mean of its divisors is an integer number (1786402800).

Almost surely, 2^44398889892 is an apocalyptic number.

44398889892 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

44398889892 is an abundant number, since it is smaller than the sum of its proper divisors (84222111708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44398889892 is a wasteful number, since it uses less digits than its factorization.

44398889892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491145 (or 491140 counting only the distinct ones).

The product of its digits is 286654464, while the sum is 72.

The spelling of 44398889892 in words is "forty-four billion, three hundred ninety-eight million, eight hundred eighty-nine thousand, eight hundred ninety-two".