44787921 has 8 divisors (see below), whose sum is σ = 62860320. Its totient is φ = 28287072.

The previous prime is 44787913. The next prime is 44787943. The reversal of 44787921 is 12978744.

It is a happy number.

44787921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 44787921 - 2³ = 44787913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44787971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392820 + ... + 392933.

It is an arithmetic number, because the mean of its divisors is an integer number (7857540).

Almost surely, 2^44787921 is an apocalyptic number.

It is an amenable number.

44787921 is a deficient number, since it is larger than the sum of its proper divisors (18072399).

44787921 is a wasteful number, since it uses less digits than its factorization.

44787921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785775.

The product of its digits is 112896, while the sum is 42.

The square root of 44787921 is about 6692.3778285449. The cubic root of 44787921 is about 355.1296782075.

The spelling of 44787921 in words is "forty-four million, seven hundred eighty-seven thousand, nine hundred twenty-one".