44242494921 has 15 divisors (see below), whose sum is σ = 66093468573. Its totient is φ = 29493734580.

The previous prime is 44242494911. The next prime is 44242494943. The reversal of 44242494921 is 12949424244.

The square root of 44242494921 is 210339.

It is a perfect power (a square), and thus also a powerful number.

44242494921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 44242494921 - 2⁵ = 44242494889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (44242494911) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1881366 + ... + 1904736.

Almost surely, 2^44242494921 is an apocalyptic number.

44242494921 is the 210339-th square number.

44242494921 is the 105170-th centered octagonal number.

It is an amenable number.

44242494921 is a deficient number, since it is larger than the sum of its proper divisors (21850973652).

44242494921 is an frugal number, since it uses more digits than its factorization.

44242494921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46754 (or 23374 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The spelling of 44242494921 in words is "forty-four billion, two hundred forty-two million, four hundred ninety-four thousand, nine hundred twenty-one".