44894949021 has 24 divisors (see below), whose sum is σ = 69843760896. Its totient is φ = 27624823200.

The previous prime is 44894949013. The next prime is 44894949109. The reversal of 44894949021 is 12094949844.

It is a happy number.

44894949021 is a `hidden beast` number, since 4 + 48 + 9 + 494 + 90 + 21 = 666.

It is not a de Polignac number, because 44894949021 - 2³ = 44894949013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44894949721) 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, 2042536 + ... + 2064398.

It is an arithmetic number, because the mean of its divisors is an integer number (2910156704).

Almost surely, 2^44894949021 is an apocalyptic number.

It is an amenable number.

44894949021 is a deficient number, since it is larger than the sum of its proper divisors (24948811875).

44894949021 is a wasteful number, since it uses less digits than its factorization.

44894949021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39433 (or 39430 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 44894949021 in words is "forty-four billion, eight hundred ninety-four million, nine hundred forty-nine thousand, twenty-one".